This chocolate chip cookie cake is soft in the center with crisp chewy edges. It's topped with a chocolate buttercream frosting and sprinkles. An easy cake for chocolate chip cookie lovers!
Preheat oven to 350°F (180°C). Line a 9" round baking pan with parchment and grease the sides. Set aside.
Whisk flour, baking soda, and salt together in a medium sized bowl. Set aside.
Add butter and sugar to a large bowl and beat until well creamed together, about 3 minutes. Add egg and vanilla and mix to combine.
Add in dry ingredients and chocolate chips. Mix until just combined. The batter will be thick.
Transfer batter into the prepared baking pan. Use your hand to press the cookie dough evenly into the baking pan. Bake for 20-25 minutes, or until the edges of the cookie cake are golden.
Remove from oven and let cake cool in it's pan for 20 minutes. Run a knife around the outside edge of the cookie cake, then flip out and let cool on a wire rack.
Chocolate Frosting
Add butter and powdered sugar to a large bowl. Beat until well combined, about 3 minutes.
Add cocoa powder, vanilla, and salt, and mix to combine. Add heavy whipping cream, 1 tablespoon at a time, until you get a piping consistency.
Pipe frosting on top of cooled cookie cake. Add sprinkles on top.
Store cookie cake at room temperature for up to 3 days.
Notes
You can substitute salted butter for unsalted butter in this recipe. Replace the salt in the cake for ¼ teaspoon instead. Omit the extra salt in the frosting.
Don't overbake the cookie cake. You want it slightly gooey in the center, but still stable. Remove the cake when it is lightly golden on top.
Instead of straight chocolate frosting, alternate between chocolate and vanilla piped frosting. Or just use vanilla frosting.