Festive St. Patrick’s Day Cookie Cake that’s soft, chewy, and loaded with chocolate chips and green M&M’s! A ring of green buttercream frosting around the edges makes this cookie cake extra special—perfect for all your little leprechauns.
The vibrant frosting turns this dessert into a standout treat for St. Patrick’s Day. Make it for a fun and delicious way to celebrate with friends and family!
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Cookie Cake for St. Patrick’s Day
This tasty treat is the perfect combination of cookie and cake, bringing together two delicious favorites that everyone will love! The base is a soft, buttery cookie dough, topped with rich, fluffy buttercream and sprinkled with festive colors for a fun, flavorful touch. Both the cookie and frosting are made from scratch using simple ingredients you likely already have in your kitchen. The result is an incredibly soft, chewy, and buttery cookie cake with sweet, creamy frosting—truly a heavenly treat!
Recipe Highlights
One slice is all you need. While it’s often hard to stop at “just one” cookie, this cookie cake is rich and heavenly—one slice is enough to satisfy your sweet tooth.
No rolling pin, no hassle. This dough comes together quickly and requires minimal equipment. No need to roll out or cut shapes—just press it into a cake pan and bake. So simple!
Made with everyday ingredients. Aside from green food coloring or St. Patrick’s Day sprinkles, you probably have everything you need in your kitchen. It’s an easy, fun, and festive treat you can whip up with what you already have.
St. Patrick’s Day Cookie Cake Ingredients
Butter (12 TBSP) adds rich flavor and helps create a soft, chewy texture in the cookie cake.
Brown sugar (1 cup) contributes depth of flavor and moisture, making the cookie tender and slightly caramelized.
Sugar (¼ cup) balances sweetness and helps achieve the perfect chewiness.
Egg (1 whole) binds the dough together and provides structure.
Egg yolk (1) adds extra richness and helps create a soft, tender crumb.
Vanilla extract (2 tsp) enhances all the flavors in the cookie and frosting.
Flour (1 ¾ cups) forms the base of the dough, giving the cookie cake its structure.
Cornstarch (1 tsp) makes the cookie cake thick and soft by tenderizing the flour.
Baking soda (1 tsp) helps the cookie rise slightly while keeping it soft and chewy.
Chocolate chips (¾ cup) add bursts of sweet, melty chocolate in every bite.
Green M&M candies (½ cup) provide festive color, crunch, and extra chocolate flavor.
Icing Ingredients
Butter (½ cup) creates a rich, creamy base for the green buttercream frosting.
Powdered sugar (2 cups) sweetens and thickens the frosting for piping.
Vanilla extract (1 tsp) adds flavor depth to the frosting.
Green food coloring (2–4 drops) makes the frosting vibrant and festive for St. Patrick’s Day.
St. Patrick’s Day sprinkles add fun decoration and a playful crunch on top of the frosting.
Tips for making this Festive Cookie Cake
Full instructions in the recipe card below, but here are a few tips for the baking process!
Don’t overmix after adding flour and mix-ins. Once you fold in the flour, chocolate chips, and M&M’s, stop mixing—overworking the dough can make the cookie cake dense instead of soft and chewy.
Use a springform pan for even baking. Pressing the dough into an 8-inch springform pan ensures the cookie cake bakes evenly and is easy to remove without breaking.
Distribute mix-ins carefully. Spread chocolate chips and M&M’s evenly through the dough and lightly press a few on top—this makes every slice festive and ensures no bites are mix-in-free.
Let it cool slightly before frosting. Waiting 20 minutes before adding the buttercream prevents the frosting from melting and sliding off, keeping your green frosting crisp and vibrant.
How long is this Chocolate Chip Cookie Cake good for?
This cookie cake will stay fresh for 3–5 days when stored in an airtight container. Once frosted, it’s best kept in the fridge, though it will also be fine at room temperature for a day or two.
It freezes well for later, but wait to frost it until after it’s thawed. Frosting before freezing can make storage tricky, as layers of parchment are needed to prevent sticking, and the icing may melt or sweat as it thaws, affecting its appearance.
St. Patrick’s Day Cookie Cake
Festive St. Patrick’s Day Cookie Cake that’s soft, chewy, and loaded with chocolate chips and green M&M’s! A ring of green buttercream frosting around the edges makes this cookie cake extra special—perfect for all your little leprechauns.
Start by getting the oven preheating to 350°F. Then, spray an 8-inch springform pan with nonstick spray and set aside.
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.
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.
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.
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. 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
This cookie cake stays fresh 3–5 days in an airtight container. Once frosted, refrigerate for best results, though it’s fine at room temperature for a day or two.It freezes well unfrosted—add the frosting after thawing to avoid melting or sticking.
Yes! You can prepare the cookie cake a day in advance and store it in an airtight container. Frost it just before serving for the freshest look and flavor.
Can I use regular M&M’s instead of green ones?
Absolutely! You can swap in any color or type of chocolate candy you like—just be aware it will change the festive look.
Do I have to use a springform pan?
A springform pan makes it easiest to remove the cookie cake without breaking, but an 8-inch round cake pan lined with parchment paper will also work.
Piping Frosting Tips & Tricks
If you have a piping bag and tips, transfer the frosting into the bag and pipe a swirl around the top of the cookie. Use any tip to create the pattern you like.
Don’t have a piping bag? No problem! A Ziploc bag with the corner snipped off works perfectly—you can still achieve a beautiful look without a specialized tip.
Piping adds a clean, decorative finish, but spreading the frosting works just as well. Use a butter knife, small rubber scraper, or even the back of a spoon to create a smooth, even layer of frosting on your cookie.
Try even more great St. Patrick’s Day recipes here:
Chocolate + mint + Oreos = cookie perfection! These Mint Oreo Cookies are loaded with crushed mint Oreos and chocolate chips for a soft, chewy, irresistible treat.
These St. Patrick’s Day Sprinkle Cookies get an extra boost of flavor and chew from vanilla pudding mix and are rolled in green sprinkles for the perfect holiday treat.
Buttery chocolate cookies meet silky green white chocolate ganache! These Shamrock Linzer Cookies are crisp, decadent, and perfect for St. Patrick’s Day.
Mint Chocolate Chip Cookie Bars are easy to make and perfect for any mint chocolate lover. Soft, chewy, and packed with chocolatey minty goodness!
Our Lucky Charms Sugar Cookies are loaded with creamy buttercream and topped with colorful cereal for the ultimate St. Patrick’s Day treat.
Chewy, soft, and full of chocolatey fun! This St. Patrick’s Day Cookie Cake is loaded with chocolate chips, green candies, and topped with thick buttercream and festive sprinkles!
ABOUT US
I began Family Cookie Recipes to delve deeper into my fascination with food! I love cooking easy, delicious recipes and trying out new products. Welcome and I hope you stick around! Meet Jessica & Nellie...
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