Peanut Butter Swirl Brownie Cake

I wanted to make a cake for my boyfriend’s birthday, but as you might know I’m on Team Pie, so I wasn’t excited to make a typical birthday cake. What I came up with is actually a giant brownie pretending to be a cake… shhh, don’t tell my boyfriend because he loved it! It’s rich enough that even he wasn’t able to eat it all in one sitting, though it didn’t last more than a few days because he was constantly going back to the fridge to snag another piece.

  • 1 stick butter
  • 3/4 cup semi-sweet chocolate chips
  • 1/2 cup sugar
  • 1/2 cup brown sugar, packed
  • 2 eggs
  • 1 tsp vanilla
  • 2/3 cup flour
  • 1/4 cup cocoa powder
  • 1 tsp salt
  • 1 tsp instant espresso
  • 1/4 cup crunchy peanut butter

Melt the butter and chocolate in the microwave in 30-second increments.

Peanut Butter Swirl Brownie Cake melt butter and chocolate

Whisk in the sugar and brown sugar.

Peanut Butter Swirl Brownie Cake add sugar and brown sugar

Whisk in the eggs one at a time, then the vanilla.

Peanut Butter Swirl Brownie Cake add egg and vanilla

In a separate bowl, whisk together the flour, cocoa powder, salt, and instant espresso.

Peanut Butter Swirl Brownie Cake whisk flour cocoa powder salt instant espresso

Add the flour mixture to the wet mixture and stir until a thick batter forms.

Peanut Butter Swirl Brownie Cake mix dry mixture into wet mixture

Spread the batter in a greased 9-inch springform pan. Microwave the peanut butter for 30 seconds, then dollop spoonfuls of the warmed peanut butter around the top of the batter.

Peanut Butter Swirl Brownie Cake dollop warm peanut butter over batter

Swirl the peanut butter into the batter using a spatula.

Peanut Butter Swirl Brownie Cake swirl peanut butter into batter

Bake at 325 degrees F for 35 minutes.

Peanut Butter Swirl Brownie Cake bake

Let brownies cool for 10 minutes, then refrigerate. Eat it straight out of the fridge – it’s super good cold!

Peanut Butter Swirl Brownie Cake