Chocolate Chip Cookie Cake

This chocolate chip cookie cake bakes up soft and chewy in just 35 minutes, then gets finished with a smooth vanilla American buttercream. It’s the easiest way to make a crowd-pleasing dessert that feels genuinely special!

I made this for my daughter’s birthday instead of a traditional cake and it was a huge hit. The cornstarch really does make a difference in the texture! It was so soft and almost melted in your mouth. Will definitely be making this every year!

⭐⭐⭐⭐⭐

Tina

This chocolate chip cookie cake has always felt like the most fun version of a classic dessert! It’s a cookie, it’s a cake, it’s covered in frosting, and nobody ever turns down a slice. I’ve made this one for birthdays, casual Friday nights, and every occasion in between.

If you, like me, just can’t get enough of chocolate chip cookies, this soft chocolate chip cookie recipe and these sourdough chocolate chip cookies are worth keeping in your back pocket for when you want individual cookies instead of a full cake! Or you could also make this peanut butter skillet cookie!

Ingredients & Substitutions

• All-Purpose Flour: It gives the cookie cake structure and a soft, chewy crumb. Bread flour will make it chewier; cake flour will make it more tender, but all-purpose is the sweet spot here.
• Baking Soda
• Cornstarch: This is the ingredient that keeps the center of the cookie cake soft and thick rather than crisp and crackery. It’s a small addition with a big payoff, just like with these brown butter chocolate chip cookies!
• Salt
• Unsalted Butter: Melted butter is what gives this cookie cake its dense, fudgy texture rather than a cakey one. Let it cool slightly before mixing.
• Brown Sugar
• Granulated Sugar: It works alongside the brown sugar to help the edges of the cookie cake turn golden and slightly crisp while the center stays soft. Don’t swap it out entirely for brown sugar, you’ll lose that contrast in texture.
• Large Egg and Egg Yolk: The whole egg provides structure, and the extra yolk adds richness and keeps the center dense and fudgy. This combination is intentional, so don’t be tempted to use two whole eggs instead.
• Vanilla Extract
• Semisweet Chocolate Chips: They’re stirred into the dough and scattered on top before baking for a melty, chocolatey bite throughout. You can use this soft chocolate chip cookie recipe-style dark chips or milk chocolate chips depending on how sweet you like it.
• Sprinkles: They’re optional, but they make the cookie cake look festive and finished like I do for any birthday or celebration.
• Powdered Sugar
• Milk
• Gel Food Color: Gel coloring gives you vibrant, saturated color without adding extra liquid that could thin your frosting. It’s completely optional, but if you want a bold border, gel is the way to go.

Variations for Chocolate Chip Cookie Cake

• Use a different buttercream: Use this cream cheese frosting for cookies, a chocolate buttercream frosting recipe, peanut butter frosting or even an easy peppermint frosting!
• Funfetti Cookie Cake: Fold a few tablespoons of rainbow sprinkles directly into the dough along with the chocolate chips before pressing it into the pan. If you love a confetti-style celebration dessert, my funfetti cookies uses the same idea and is worth bookmarking too.
• Add more than just chocolate chips: Add up to ¾ cup chopped nuts like walnuts, pecans or macadamia nuts, M&M’s, peanut butter chips, rolled oats, butterscotch chips, sprinkles or some combination of all of them! Get inspired by these kitchen sink cookies!
• Dark Chocolate and Sea Salt: Swap the semisweet chips for dark chocolate chips and finish the baked cookie cake with a light sprinkle of flaky sea salt like I do with the olive oil chocolate chip cookies before the frosting goes on. The bitterness of the dark chocolate balances the sweet buttercream beautifully.

Professional Tips for Perfect Chocolate Chip Cookie Cake

• Don’t overbake it. The cookie cake will look slightly underdone in the center when you pull it from the oven, and that’s exactly what you want. It continues to set as it cools in the pan, and a fully set cookie fresh out of the oven will be dry and crumbly once it reaches room temperature.
• Cool completely before decorating. Piping frosting onto a warm cookie cake will cause the buttercream to melt and slide right off. Give it the full hour on the cooling rack before you even pick up the piping bag, and the frosting will hold its shape cleanly.
• Press the dough evenly into the pan. An uneven layer means the thin spots overcook before the thick center is done. Use the flat bottom of a measuring cup or your palm to press the dough into a consistent, level layer all the way to the edges.
• Add sprinkles immediately after piping. The frosting sets quickly at room temperature, and sprinkles won’t stick to frosting that’s already begun to dry. Pipe a section, sprinkle, then move to the next, rather than frosting the entire cake first.

How to Make Chocolate Chip Cookie Cake

Use these step-by-step instructions to make a soft, chewy chocolate chip cookie cake with a smooth vanilla buttercream border. Further details and measurements can be found in the recipe card below.

Step 1: Prep the pan and preheat. Preheat your oven to 350°F. Line the bottom and sides of a 9-inch cake pan with aluminum foil, pressing it smoothly against the corners so it lies as flat as possible. Set the pan aside. The foil lining is what lets you lift the whole cookie cake out cleanly after it cools, so don’t skip this step.

Make Cookie Dough

Step 2: Mix the dry ingredients.Whisk the flour, baking soda, cornstarch, and salt together in a large bowl until evenly combined.

Step 3: Mix the wet ingredients. In a separate medium bowl, whisk the melted and slightly cooled butter with the brown sugar and granulated sugar until the mixture looks smooth and glossy. Add the egg, egg yolk, and vanilla extract and whisk again until fully combined. The mixture will look thick and a little shiny, which is exactly right.

Make sure your butter has cooled for at least 5 minutes before mixing. Hot butter can partially cook the egg and affect the texture of the dough.

Step 4: Combine wet and dry ingredients. Pour the wet ingredients into the bowl of dry ingredients and stir with a wooden spoon or spatula until a soft, thick dough forms. It’ll come together in about 1 to 2 minutes of stirring. The dough will feel noticeably denser than a typical cookie dough, which is normal and what you want for a cookie cake that slices cleanly.

Step 5: Fold in the chocolate chips. Add the chocolate chips to the dough and stir until they’re evenly distributed throughout.

This whole recipe can be made by hand without using an electric mixer, but you could make it using a hand mixer or in the bowl of a stand mixer fitted with the paddle attachment particularly if making a large batch.

Bake the Cookie

Step 6: Press the dough into the pan. Transfer the dough to your prepared pan and press it into an even layer using your fingers or the bottom of a flat measuring cup. Work from the center outward and make sure the edges are the same thickness as the middle so the cookie cake bakes evenly. Press a few extra chocolate chips into the top if you’d like a more finished look when it comes out of the oven.

Step 7: Bake the cookie cake. Bake at 350°F for 18 to 22 minutes, until the top is lightly golden and the edges are a deeper golden brown. The center may look slightly underdone when you pull it out, and that’s completely fine. It will firm up as it cools, and a fully set center right out of the oven usually means the cookie cake has gone a minute or two too long.

Start checking at 18 minutes. Every oven runs a little differently, and the difference between perfectly chewy and overdone is just a couple of minutes here.

Step 8: Cool completely. Set the pan on a wire cooling rack and let the cookie cake cool completely in the pan, about 1 hour. Cutting into it too soon means the interior hasn’t fully set, and you’ll lose that clean, defined slice.

Step 9: Remove from the pan. Once the cookie cake is fully cooled, use the foil to lift it straight out of the pan in one piece. Peel the foil away from the sides and bottom carefully, then transfer the cookie cake to a large serving plate. It should release cleanly and hold its shape well.

Make the Buttercream & Decorate

Step 10: Make the buttercream. Beat the softened butter and powdered sugar together in the bowl of a stand mixer fitted with the paddle attachment, or in a large bowl with a hand mixer, until combined. Add a pinch of salt, the vanilla extract, and 1 tablespoon of milk, then beat on medium speed until the frosting is smooth and fluffy. If it feels too stiff to pipe, add the second tablespoon of milk and beat again until it loosens up to a smooth, spreadable consistency.

Step 11: Add color and pipe the frosting. If you’re using gel food color, beat it in now until the color is fully and evenly distributed through the frosting. Transfer the frosting to a large piping bag fitted with your decorating tip of choice and pipe it around the border of the cookie cake however you like. Add sprinkles immediately while the frosting is still soft so they stick.

Recipe FAQs

Before You Go

I hope this chocolate chip cookie cake becomes your new go-to for every birthday, celebration, or just-because occasion. Browse our cookie recipes or head right over to these chocolate thumbprint cookies!