Brown Butter Chocolate Chip Cookie Cake

Brown Butter Chocolate Chip Cookie CakeBrown Butter.

Chocolate Chip.

Cookie Cake.

Brown Butter Chocolate Chip Cookie CakeTake it from someone who has made three of these cakes since Saturday—this stuff is dangerous.

Brown Butter Chocolate Chip Cookie CakeBrown Butter Chocolate Chip Cookie CakeBrown Butter Chocolate Chip Cookie CakeIt’s basically one huge chocolate chip cookie that’s been amped up with brown butter. Oh, and the brown butter is melted rather than chilled and softened, so this is a no-waiting, no-mixer recipe. And there’s tons of deep caramel flavor from dark brown sugar. And chocolate chips.

Brown Butter Chocolate Chip Cookie CakeIt’s dangerous, I tell you.

Brown Butter Chocolate Chip Cookie CakeDid I mention the Chocolate Buttercream? It’s pretty important—I consider it one of the two things that makes this dessert a cake instead of just a gigantic cookie (the other is that it’s baked in a cake pan). This frosting is everything. Seriously. It’s sweet, buttery, and intensely chocolaty, but also almost ethereally light and fluffy. And easy. And difficult to stop eating with a spoon once you’ve finished using it for decoration 😬

Brown Butter Chocolate Chip Cookie CakeSo basically what I’m saying is that you absolutely should make this Brown Butter Chocolate Chip Cookie Cake, but don’t attempt it alone. You’ll need someone to keep you from eating the whole thing.

Luckily for all of us, it’s always more fun to share dessert.Brown Butter Chocolate Chip Cookie Cake

Brown Butter Chocolate Chip Cookie Cake
adapted from Sally’s Baking Addiction
makes 1 9-inch round cake

3/4 cup (1 1/2 sticks) unsalted butter
1 cup dark brown sugar, packed
1 large egg + 1 large egg yolk, room temperature
1 1/2 teaspoons pure vanilla extract 
2 cups all-purpose flour
2 tablespoons cornstarch
1 teaspoon baking soda
1/2 teaspoon Kosher or sea salt
1 cup semisweet chocolate chips

For decoration:
Chocolate Buttercream (recipe below)
rainbow sprinkles

Preheat oven to 350F. Grease a 9-inch round cake pan with butter. Line the bottom with parchment and grease again. Set aside.

Brown the butter. Place butter in a light-colored saucepan over medium heat. Let butter melt. Butter will bubble and crackle as the water content evaporates. Swirl the pan frequently for 5-7 minutes, keeping an eye on the color. When the solids are turning brown and the butter is nutty and fragrant, remove the pot from the heat and immediately pour the brown butter into a large mixing bowl.

Whisk dark brown sugar into the brown butter, followed by egg and yolk and vanilla. Stir in flour, cornstarch, baking soda, and salt. Fold in chocolate chips. Transfer dough to prepared pan and spread into one even layer. Bake 20-22 minutes, until the top no longer appears shiny.

Let cookie cake cool completely in the pan on a rack. Run a small, thin knife around the edge of the pan before inverting the cake onto the rack. Revert onto a serving plate. Decorate with Chocolate Buttercream and sprinkles as desired.

Decorated cake will keep at room temperature for up to two days, or in the refrigerator for up to five.

Chocolate Buttercream
makes about 1 1/2 cups

1/2 cup (1 stick) unsalted butter, softened to room temperature
1 1/4 cup confectioners sugar
6 tablespoons natural unsweetened cocoa powder
pinch of Kosher or sea salt
1 teaspoon pure vanilla extract 
3 tablespoons heavy cream

In a large mixing bowl, use an electric mixer to beat butter until light and fluffy (about two minutes). Beat in confectioner’s sugar, followed by cocoa powder and salt, scraping down the bowl as necessary. Add in vanilla and heavy cream. Beat on high for 1-2 minutes, until very fluffy.

Load into a piping bag fitted with a tip (I used a star tip here), or spread with an offset icing knife.

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