St Patricks Day Green Cookie Cake

Ultimate St. Patrick’s Day Cookie Cake: Soft, Chewy & Perfectly Green!

Get ready to celebrate St. Patrick’s Day in the most delicious way possible with this show-stopping Festive St. Patrick’s Day Cookie Cake! Imagine a gloriously soft and delightfully chewy giant cookie, generously studded with luscious chocolate chips and vibrant green M&M’s. The magic doesn’t stop there – it’s beautifully crowned with a rich, velvety green buttercream frosting piped elegantly around its edges, making it an irresistible treat that will enchant all your little leprechauns and guests alike. This cookie cake isn’t just a dessert; it’s a festive centerpiece, brimming with holiday cheer and an explosion of flavor in every single bite.

A delectable slice of a green St. Patrick's Day cookie cake, showcasing its soft texture and green M&M's.

The vibrant green frosting, a signature color of the holiday, transforms this already amazing dessert into an unforgettable masterpiece. This isn’t just any cookie cake; it’s a celebration of Irish spirit, bringing joy and a touch of whimsy to your holiday table. Whether you’re hosting a grand St. Patrick’s Day gathering or simply want a special treat to share with loved ones, this St. Patrick’s Day Cake offers a wonderful and delightful experience. It’s an effortless yet impressive dessert that promises smiles and satisfied sweet cravings. Prepare to impress your friends and family with a dessert that looks as fantastic as it tastes, making your St. Patrick’s Day festivities truly memorable.

Cookie Cake for St. Patrick’s Day: A Sweet Celebration

This magnificent cookie cake perfectly marries the comforting chewiness of a classic cookie with the generous, shareable nature of a cake, creating a dessert that truly has the best of both worlds. It’s a delightful hybrid that guarantees everyone will find something to love! The foundation of this incredible dessert is a rich, buttery cookie dough, pressed into a cake pan and baked to golden perfection. Once cooled, it’s crowned with a luxurious, fluffy buttercream frosting, artfully tinted a cheerful green and generously sprinkled with festive decorations. This isn’t a boxed mix affair; both the delectable cookie base and the cloud-like frosting are made from scratch using simple, wholesome ingredients that you likely already have stocked in your kitchen pantry. The process is straightforward, and the reward is immense: an incredibly buttery, soft, and chewy cookie cake with a sweet, creamy buttercream frosting that melts in your mouth. This truly is a heavenly treat that elevates any occasion, especially the joyful celebration of St. Patrick’s Day.

WHY YOU’LL LOVE THIS FESTIVE COOKIE CAKE:

There are countless reasons why this St. Patrick’s Day Cookie Cake is destined to become a holiday favorite. Its charm lies not only in its festive appearance but also in its incredible taste and surprising ease of preparation. Here are just a few compelling reasons why you’ll fall in love with this recipe:

  • One Slice is So Satisfying: While the allure of “just one more” cookie can be hard to resist with individual cookies, this cookie cake offers a supremely rich and substantial experience. Each generous slice is packed with buttery flavor, sweet chocolate, and creamy frosting, making it incredibly satisfying. One decadent piece is truly enough to curb even the most intense sweet tooth, leaving you feeling perfectly content and delighted. It’s a truly indulgent treat without requiring excessive consumption.
  • No Rolling Pin or Hassle: Say goodbye to the tedious process of rolling out dough, cutting intricate shapes, and transferring delicate cookies to baking sheets. This recipe is designed for maximum enjoyment with minimal effort. The cookie dough comes together effortlessly and requires no special equipment beyond a mixing bowl and a spoon or electric mixer. Simply press the dough evenly into a standard cake pan, and it’s ready for the oven. This hands-off approach makes baking fun and stress-free, perfect for busy holiday preparations.
  • Simple, Accessible Ingredients: You won’t need to embark on a scavenger hunt for obscure ingredients to make this delightful dessert. With the exception of a few drops of green food coloring or some festive St. Patrick’s Day themed sprinkles, it’s highly probable that most, if not all, of the ingredients for both the cookie and the frosting are already staples in your kitchen. This makes it a convenient and economical choice for a holiday treat. You can easily use what you have on hand, minimizing grocery runs and maximizing baking enjoyment.
  • Perfect for Sharing & Parties: Unlike individual cookies that can be messy to serve at gatherings, a cookie cake is designed for sharing. Its large, round form allows for easy slicing into wedges, making it ideal for parties, family dinners, or potlucks. It serves as a beautiful centerpiece and a crowd-pleasing dessert that encourages everyone to gather round and enjoy a piece of the festive fun together.
  • A Fun Baking Project for All Ages: The straightforward nature of this recipe makes it an excellent baking project for involving children. From mixing the dough to decorating with green M&M’s and sprinkles, there are plenty of steps where little hands can help, fostering a love for baking and creating cherished holiday memories.

St. Patrick’s Day Cookie Cake Ingredients: Your Pot of Gold List

Crafting the perfect St. Patrick’s Day Cookie Cake starts with a selection of quality ingredients. Each component plays a crucial role in achieving the desired soft, chewy texture and rich, buttery flavor that makes this dessert so irresistible.

Butter (for the cookie): You will need 12 tablespoons of unsalted butter, softened to room temperature. This is the foundation of our cookie, providing richness, tenderness, and contributing to that melt-in-your-mouth texture.

Brown Sugar: Add 1 cup of packed light brown sugar. Brown sugar is essential for an amazing depth of flavor, contributing to the cookie’s signature chewiness and moistness, thanks to its molasses content.

Granulated Sugar: You will need ¼ cup of granulated white sugar. This works in conjunction with the brown sugar to ensure the cookie cake is wonderfully chewy and soft, while also aiding in spreading.

Egg: Incorporate 1 large whole egg. The egg acts as a binder, providing structure and moisture, which is key to creating the perfect texture for a cookie cake.

Egg Yolk: By also adding in 1 extra large egg yolk, we further enrich the cookie cake, adding moisture and tenderness without making it overly cakey. This little secret ingredient contributes to a wonderfully chewy result.

Vanilla Extract: To enhance all the great flavors already present in this dough, use 2 teaspoons of pure vanilla extract. Vanilla is a must for any classic cookie, adding a warm, aromatic note that complements the other ingredients beautifully.

All-Purpose Flour: For the primary structure and base of this cookie dough, use 1 ¾ cups of all-purpose flour. Make sure to measure it correctly by spooning it into the measuring cup and leveling it off.

Cornstarch: Adding in 1 teaspoon of cornstarch is a secret weapon that helps make a nice thick cake cookie, contributing to its tender crumb and preventing it from spreading too much.

Baking Soda: Using 1 teaspoon of baking soda is crucial for leavening. It reacts with the acidic brown sugar to help this cookie rise perfectly as it bakes, resulting in a soft and airy texture.

Step-by-step collage demonstrating how to make a St. Patrick's Day cookie cake, showing mixing ingredients and dough preparation.

Chocolate Chips: To add even more amazing flavor and texture, you will want to stir in ¾ cup of your favorite semi-sweet chocolate chips. These pockets of melted chocolate enhance the classic cookie experience.

Candies: You need ½ cup of vibrant green M&M candies to decorate the cake and add that essential festive touch! These not only provide color but also a delightful candy crunch.

Icing Ingredients: The Emerald Crown

The green buttercream frosting is what truly makes this cookie cake shine for St. Patrick’s Day. Here’s what you’ll need for this decadent topping:

Butter (for the frosting): For a rich, creamy, and undeniably delicious frosting, add in ½ cup of unsalted butter, softened. Room temperature butter is key for a smooth, lump-free frosting.

Powdered Sugar: The structural base of this frosting is 2 cups of powdered sugar (also known as confectioners’ sugar). This finely milled sugar dissolves beautifully, creating a silky-smooth texture.

Vanilla Extract: You need 1 teaspoon of pure vanilla extract to give this icing a wonderful, classic flavor that complements the cookie cake perfectly.

Green Food Coloring: To make this cookie cake extra festive and truly capture the spirit of St. Patrick’s Day, you will need a few drops of green gel food coloring. Gel coloring provides a concentrated color without thinning the frosting.

St. Patrick’s Day Sprinkles: Add even more fun, texture, and visual appeal to this dessert with a generous scattering of St. Patrick’s Day colored or themed sprinkles. Gold, green, and white sprinkles are ideal!

A beautifully frosted whole St. Patrick's Day cookie cake, ready to be sliced and served.

How to Make a Festive Cookie Cake: Your Guide to Sweet Success

Creating this stunning St. Patrick’s Day Cookie Cake is a straightforward and enjoyable process. Follow these detailed steps to ensure a perfect result every time.

Prep Work: Getting Started

Before you dive into mixing, a little preparation goes a long way. Start by preheating your oven to 350°F (175°C). This ensures the oven is at the correct temperature when your dough is ready, promoting even baking. Next, take an 8-inch springform pan and thoroughly spray it with a nonstick baking spray. Springform pans are ideal for cookie cakes as their removable sides make for effortless release once the cookie is baked and cooled, ensuring your beautiful creation remains intact. Set the prepared pan aside.

Crafting the Cookie Batter: The Heart of the Cake

In a large mixing bowl, combine your softened butter with both the brown sugar and granulated sugar. Beat these ingredients together using an electric mixer or a stand mixer fitted with the paddle attachment until the mixture becomes light, fluffy, and creamy. This creaming process incorporates air, which contributes to the cookie cake’s tender texture. This step typically takes about 2-3 minutes. After achieving this creamy consistency, add in the whole egg, the extra egg yolk, and the vanilla extract. Continue to mix for another minute, ensuring all these wet ingredients are fully incorporated and the mixture is smooth.

Next, in a separate bowl, whisk together your dry ingredients: the all-purpose flour, cornstarch, and baking soda. This ensures they are evenly distributed before adding them to the wet ingredients. Gradually add the dry ingredient mixture to the wet mixture, mixing on low speed until just combined. Be careful not to overmix the dough at this stage, as overmixing can lead to a tough cookie cake. Finally, gently stir in the chocolate chips and green M&M candies until they are evenly distributed throughout the dough. Again, mix just until combined to prevent the candies from breaking apart and to maintain the tender texture of the dough.

A festive St. Patrick's Day Cookie Cake collage, showing dough being pressed into a pan, the finished cake, and a slice.
Festive St. Patrick’s Day Cookie Cake that’s soft, chewy & studded with chocolate chips & green M&M’s! Green buttercream frosting rings the edges of this delicious cookie that’s perfect for all your little leprechauns!

Baking to Perfection: Golden and Delicious

Once your dough is ready, transfer it into the prepared 8-inch springform cake pan. Use the back of a spoon or your fingertips to gently spread the cookie dough evenly across the bottom of the pan, making sure it reaches all the edges for a consistent bake. Place the pan into your preheated 350°F (175°C) oven and bake for 20-25 minutes. The cookie cake is done when the edges are beautifully golden brown and the center appears set, though it might still be slightly soft. Avoid overbaking, as this can dry out the cookie. After baking, remove the pan from the oven and let the cookie cake cool in the pan on a wire rack for at least 20 minutes. This allows it to firm up before handling. Once slightly cooled, run a thin knife around the edge of the pan to loosen the cookie, then carefully release the springform pan sides. Let the cookie cake cool completely on the wire rack before frosting, as warm cookie will melt your beautiful buttercream.

Mastering the Green Buttercream Frosting: The Finishing Touch

While your cookie cake cools, prepare the star of the decoration: the vibrant green buttercream frosting. In a clean mixing bowl, combine the softened butter, vanilla extract, and powdered sugar. Begin mixing on low speed to incorporate the powdered sugar, then gradually increase to medium-high speed. Beat until the mixture is incredibly light, fluffy, and smooth, scraping down the sides of the bowl as needed. An electric mixer is highly recommended for achieving the perfect fluffy consistency. This usually takes about 3-5 minutes of beating.

Once the frosting is beautifully whipped, add 2-4 drops of green gel food coloring. Start with a smaller amount and add more if a deeper shade of green is desired. Mix well until the color is uniformly distributed, and no white streaks remain. This creates the signature festive look for your St. Patrick’s Day treat. Finally, transfer the frosting to a piping bag fitted with your desired tip (a star tip or round tip works wonderfully for borders). Pipe a decorative border or swirl pattern around the edges of the cooled cookie cake. Finish by generously scattering St. Patrick’s Day sprinkles over the frosting for an extra festive flourish. Once decorated, slice the cookie cake into wedges, serve immediately, and enjoy the delicious celebration!

whole St. Patrick's Day cookie cake

St. Patrick’s Day Cookie Cake

Festive St. Patrick’s Day Cookie Cake that’s soft, chewy & studded with chocolate chips & green M&M’s!  A thick buttercream frosting rings the edges and is topped with sprinkles.  It is delicious and perfect for all your little leprechauns! 

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Course: Cookies, Dessert
Cuisine: American
Keyword: St. Patrick’s Day cookie cake
Prep Time: 20 minutes
Cook Time: 20 minutes
Total Time: 40 minutes
Servings: 16 servings
Calories: 370kcal
Author: Jessica & Nellie
Prevent your screen from going to sleep

Ingredients 

  • 12 tbsp butter softened
  • 1 cup brown sugar
  • ¼ cup sugar
  • 1 egg
  • 1 egg yolk
  • 2 tsp vanilla extract
  • 1 ¾ cup flour
  • 1 tsp cornstarch
  • 1 tsp baking soda
  • ½ cup chocolate chips
  • ½ cup green M&M candies

Frosting

  • ½ cup butter softened
  • 2 cups powdered sugar
  • 1 tsp vanilla extract
  • green food coloring
  • St. Patrick’s day sprinkles

Instructions

  • Prep: Start by getting the oven preheating to 350°F. Then, spray an 8-inch springform pan with nonstick spray and set aside.
  • Batter: Next, in a large mixing bowl, beat the butter, brown sugar, and sugar until light and creamy. I find this easiest to do with an electric mixer or Kitchen Aid mixer. After that, add in the egg, egg yolk, and vanilla extract; continue to mix for 1 minute.
  • Proceed to stir in the flour, cornstarch, and baking soda and mix again until combined. Then stir in the chocolate chips and M&M candies until just combined, be careful not to overmix.
  • Bake: Continue to spread the cookie dough into the prepared springform cake pan and place in the preheated oven to bake for 20-25 minutes, until golden brown. Let the cookie cool for about 20 minutes, then run a knife around the edge and release the springform pan. 
  • Frosting: Prepare the icing by combining the butter, vanilla extract, and powdered sugar, mixing until the mixture is light and fluffy. Again, using an electric mixer helps greatly with this step. Next, add in 2-4 drops green food coloring and stir well until no white streaks are seen.
  • Then pipe the frosting around the edges of the cake and top with sprinkles. Slice into wedges, serve and enjoy!

Notes

Festive St. Patrick’s Day Cookie Cake is a wonderfully soft, chewy and delicious treat that is fun to share with family and friends. With a sweet, thick buttercream frosting, topped with sprinkles, it’s perfect for the little leprechauns in your life! 

Nutrition

Calories: 370kcal | Carbohydrates: 51g | Protein: 3g | Fat: 18g | Saturated Fat: 11g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 1g | Cholesterol: 62mg | Sodium: 199mg | Potassium: 44mg | Fiber: 1g | Sugar: 39g | Vitamin A: 498IU | Vitamin C: 0.1mg | Calcium: 35mg | Iron: 1mg
Tried this recipe?Mention @familycookierecipes or tag #familycookierecipes!

HOW LONG IS THIS COOKIE CAKE GOOD FOR?

Once baked and frosted, this delicious St. Patrick’s Day cookie cake remains wonderfully fresh and enjoyable for up to 3-5 days. To ensure its longevity and maintain its exquisite texture and flavor, it is crucial to store any leftovers in an airtight container. This protects the cookie from drying out and the frosting from hardening or absorbing unwanted odors. For optimal freshness, especially if your kitchen is warm, I recommend storing the frosted cookie cake in the refrigerator. However, if consumed within a couple of days and kept covered, it will also be perfectly fine at room temperature. Always allow it to come closer to room temperature for the best taste and texture before serving.

CAN I FREEZE FROSTED COOKIES?

While this cookie cake is an excellent candidate for freezing, allowing you to prepare it ahead of time or save leftovers for a later craving, I strongly recommend waiting to apply the frosting until after the cookie base has been thawed. Freezing the unfrosted cookie cake is straightforward: simply wrap the cooled cookie base tightly in plastic wrap, then a layer of aluminum foil, and place it in a freezer-safe bag or container. It can be frozen for up to 3 months.

If you frost the cookie before freezing, the storage process becomes a bit more complicated. You would need to freeze the frosted cookie solid on a baking sheet before wrapping it to prevent the frosting from smudging. Then, when thawing, the icing may melt, sweat, or develop an unappetizing watery consistency as it comes back to room temperature. This can significantly detract from its visual appeal and texture. For the freshest, most attractive result, always freeze the cookie base unfrosted, then thaw it overnight in the refrigerator or for a few hours at room temperature, and finally, prepare and apply your fresh buttercream frosting just before serving.

Piping Frosting Tips & Tricks: Elevate Your Decoration

Decorating your St. Patrick’s Day Cookie Cake can be as simple or as elaborate as you desire. Here are some tips and tricks to help you achieve a beautiful finish with your green buttercream frosting:

  • Using a Piping Bag and Tips: For that professional, bakery-quality look, transferring your luscious green buttercream frosting to a piping bag fitted with a decorative tip is the way to go. A large star tip (like a Wilton 1M or 2D) creates beautiful rosettes or a classic shell border, while a large round tip can make elegant dots or a smooth, full border. Experiment with different tips to find the pattern you love most for ringing the edges of your cookie cake with swirls or dollops.
  • No Piping Bag? No Problem!: Don’t have specialized piping equipment on hand? No worries at all! A sturdy Ziploc bag (or any freezer-safe plastic bag) makes for an excellent substitute. Simply spoon the frosting into one corner of the bag, twist the top to seal, and then snip off a small corner with scissors. Start with a very small snip; you can always make the opening larger if needed. Even without a fancy tip, you can still achieve a nice, clean piped line or a rustic, charming dollop effect with just a plastic baggie.
  • The Art of Spreading Frosting: While piping adds a polished touch, there’s absolutely nothing wrong with opting for a simpler, equally delicious route by spreading the frosting directly onto the cookie cake. For a nice, smooth finish, I like to use a small offset spatula, a butter knife, or even the back of a spoon. Gently spread the green buttercream evenly over the top, or just around the perimeter if you prefer a more minimalist look. A smooth, even layer of frosting can be just as appealing and provides a perfect canvas for those festive sprinkles!
A delicious slice taken out of a St. Patrick's Day cookie cake, showing the rich interior and green frosting.

Try Even More Great St. Patrick’s Day Recipes Here:

If you’re looking to expand your festive St. Patrick’s Day menu beyond this incredible cookie cake, we’ve got you covered! Explore these other delightful and vibrant recipes perfect for adding more green and gold to your celebrations:

    • FUN & FESTIVE ST. PATRICK’S DAY DESSERTS
    • MINT CHIP DIP
    • MINT CHOCOLATE POKE CAKE
    • MINT CHOCOLATE CHIP CAKE
    • MINT CHOCOLATE CHIP CREAM PIE
    • MINT OREO BALLS
    • CHOCOLATE PISTACHIO PINWHEEL COOKIES for ST. PATRICK’S DAY
    • ST. PATRICKS DAY HOT CHOCOLATE BOMBS
    • MINT CHOCOLATE CHIP COOKIE BARS
    • DOUBLE CHOCOLATE MINT COOKIES
    • ST. PATRICKS DAY SUGAR COOKIES
    • MINT CHOCOLATE CHIP COOKIES
    • EASY PISTACHIO CREAM PIE
    • MINT MUDDY BUDDIES
    • THE BEST MINT BROWNIES

    This Festive St. Patrick’s Day Cookie Cake is truly a golden find – chewy, soft, and bursting with chocolate chips and cheerful green candies! The generous, thick buttercream frosting gracefully piped around the cake’s edge, topped with an array of sprinkles, transforms it into an utterly delicious treat. It’s the quintessential dessert to share with all the little leprechauns and cherished guests in your life, guaranteeing a sweet and memorable celebration.

    Festive St. Patrick's Day Cookie Cake that's soft, chewy & studded with chocolate chips & green M&M's! Green buttercream frosting rings the edges of this delicious cookies that's perfect for all your little leprechauns!

    Festive St. Patrick’s Day Cookie Cake that’s soft, chewy & studded with chocolate chips & green M&M’s! Green buttercream frosting rings the edges of this delicious cookie that’s perfect for all your little leprechauns!