Chocolate Chip Cookie Cake with Chocolate Buttercream

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This Chocolate Chip Cookie Cake with Chocolate Buttercream Frosting is sweet, chewy, simple to make, and perfect for celebrations. It has everything you love about a classic chocolate chip cookie, but it is baked as one large cookie cake with crisp edges, a soft center, and plenty of chocolate chips in every bite. Finished with smooth chocolate buttercream, sprinkles, or any decorations you like, this easy cookie cake is a fun alternative to a traditional birthday cake.

About The Recipe

This chocolate chip cookie cake was inspired by those giant decorated cookie cakes you often see in bakery cases and mall shops. They are festive, nostalgic, and always tempting. Instead of buying one, this homemade version brings the same idea into your own kitchen with simple pantry ingredients and a rich chocolate buttercream frosting.

The result is a soft and chewy cookie cake that feels special without being complicated. There is no need to chill the dough, stack layers, or prepare an elaborate decoration plan. The cookie dough comes together quickly, bakes in a round cake pan, and cools into a sliceable dessert that works beautifully for birthdays, graduations, anniversaries, or any day that could use a little chocolate.

If you love chocolate chip cookies, this recipe is an easy favorite. The brown sugar gives the cookie cake a deeper flavor and a chewy texture, while the granulated sugar helps create lightly crisp edges. The chocolate chips make it extra rich, and the chocolate frosting turns it into a true celebration dessert.

What is a Cookie Cake?

A cookie cake is not a traditional cake with layers and crumbs. It is one large cookie baked in a cake pan, then decorated to look and feel more like a party cake. This version is a giant chocolate chip cookie with a soft center, crisp edges, and plenty of chocolate throughout.

Because it slices cleanly and can be decorated with frosting, a cookie cake is a great dessert for parties. It is easier than a layer cake, more playful than a batch of cookies, and just as crowd-pleasing as both.

Reasons You Will Love This Chocolate Chip Cookie Cake

• No dough chilling is required.
• It is ready in less than an hour.
• It tastes like a giant chocolate chip cookie with chocolate frosting.
• The recipe is simple and beginner-friendly.
• It is perfect for birthdays, graduations, anniversaries, and casual celebrations.
• It serves 12 people.
• You can decorate it any way you like.

Equipment Needed

• 10-inch round cake pan
• Mixing bowls
• Hand mixer
• Rubber spatula
• Offset spatula
• Piping bags
• Piping tips

Ingredients

Full ingredient amounts and instructions are included in the recipe card below.

For The Cookie:

• Unsalted Butter – Unsalted butter lets you control the amount of salt in the cookie dough.
• Granulated Sugar – Adds sweetness and helps create slightly crisp edges.
• Brown Sugar – Adds moisture, chewiness, and a richer flavor.
• Large Eggs – Help bind the dough and create a soft, tender texture.
• Vanilla Extract – Adds warm flavor that complements the chocolate.
• All-Purpose Flour – Gives the cookie cake structure while keeping it soft.
• Baking Soda – Helps the cookie cake rise and bake evenly.
• Salt – Balances the sweetness and enhances the flavor.
• Chocolate Chips – Use milk chocolate, semisweet, dark chocolate, chopped chocolate, or chocolate chunks.

For The Frosting:

• Salted Butter – Softened salted butter gives the frosting flavor and a smooth base.
• Powdered Sugar – Creates a sweet, creamy buttercream. Sifting helps prevent lumps.
• Natural Process Cocoa Powder – Adds a rich chocolate flavor.
• Whole Milk – Loosens the frosting so it is smooth enough to pipe.
• Vanilla Extract – Enhances the chocolate flavor.

How To Make This Chocolate Chip Cookie Cake

Step 1: Prepare cookie dough

Using an electric mixer, beat the butter, granulated sugar, and brown sugar until the mixture is light and fluffy, about 2 to 3 minutes.

Add the eggs one at a time, beating well after each addition. Mix in the vanilla extract.

Add the flour, baking soda, and salt. Mix just until the dry ingredients are incorporated, then fold in the chocolate chips. Avoid over-mixing so the cookie cake stays tender.

Step 2: Bake

Scrape the cookie dough into the prepared pan and spread it into an even layer. Bake for about 25 minutes, or until it reaches your preferred level of doneness. Let the cookie cake cool completely in the pan before turning it out.

Step 3: Make the frosting

Beat the butter, powdered sugar, cocoa powder, milk, and vanilla with an electric mixer until the frosting is smooth and fluffy, about 3 to 4 minutes.

Step 4: Decorate

Pipe the chocolate buttercream onto the completely cooled cookie cake. Add sprinkles, flowers, chopped chocolate, or any decoration that fits the occasion.

Frequently Asked Questions

Is it a cookie or a cake?
This recipe is a giant chocolate chip cookie baked in a cake pan. The frosting and decorations give it the look of a cake.

Can I use something other than chocolate chips?
Yes. You can use chocolate chunks, chopped chocolate bars, white chocolate chips, nuts, candy pieces, or other mix-ins you enjoy.

What if I do not have a 10-inch cake pan?
A 10-inch round cake pan works best for this recipe, but an 8-inch square cake pan can be used if needed. Baking time may vary slightly.

Can I make this into a layered dessert?
Yes. Double the cookie recipe to make a second layer. You may also need to double or triple the frosting, depending on how much frosting you want between and around the layers.

How do I write on this cookie cake?
Use a small piping tip and a piping bag filled with frosting. Pipe slowly and carefully for the cleanest message. You may need extra frosting for writing.

10 Mix-Ins To Upgrade This Cookie Cake

This chocolate chip cookie cake is easy to customize. Since the base is a classic cookie dough, many sweet, salty, crunchy, or chewy additions can work well.

• Nuts, such as pecans, walnuts, pistachios, or peanuts
• Soft caramel chunks
• Mini marshmallows
• Crunchy pretzels
• White chocolate chips
• Chopped candy bars
• Crushed potato chips
• M&M’s
• Dried cherries, cranberries, apricots, or other dried fruits
• Chopped sandwich cookies

Decorating Ideas

Decorating this cookie cake can be as simple or as detailed as you like. A piped border of chocolate buttercream is classic, but there are many ways to make it feel more festive.

• Pipe frosting with different tips to create borders, swirls, or patterns.
• Add rainbow sprinkles for color.
• Use plain buttercream and tint it with food coloring.
• Pipe a short celebration message in the center.
• Add edible flowers for a seasonal look.
• Top with chopped nuts, chopped candy bars, or crushed peppermint.
• Drizzle with chocolate sauce or caramel sauce.

How To Store

Store leftover cookie cake covered at room temperature for 2 to 3 days. You can also refrigerate it in a covered cake plate or zip-top bag for 5 to 8 days.

To freeze, wrap the cookie cake well or place slices in a freezer-safe zip-top bag or lidded container. It can be frozen whole or in individual slices for 2 to 3 months.

Substitutions

• If you only have salted butter for the cookie dough, use it and omit the added salt.
• Bake times may vary depending on your oven and the thickness of your cake pan, so keep an eye on the cookie cake as it bakes.
• For a vegan version, use plant-based butter, a vegan egg substitute such as aquafaba, and non-dairy chocolate chips. For the frosting, use plant-based butter and unsweetened non-dairy milk.

Expert Tips

• Use room-temperature butter and eggs for the best texture.
• Check that your baking soda is fresh before baking.
• Do not over-mix the dough after adding the flour.
• Watch the cookie cake near the end of baking because ovens and pans can vary.
• For a slightly softer center, bake for about 20 minutes. For a more fully baked cookie cake, bake for 25 to 30 minutes.
• Let the cookie cool completely before removing it from the pan so it does not break.
• The frosting amount is enough for a piped border. If you want more decoration or writing, make extra frosting.

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