Peanut Butter Swirl Brownies

I didn't let the brownies cool enough so they crumbled some when I went to cut them and take them out of the pan. Make sure to let them cool completely! 

Peanut Butter Swirl Brownies

For the peanut butter swirl:

3/4 cup peanut butter

1/2 cup powdered sugar

1/4 cup half a stick butter, melted

1/4 teaspoon kosher salt

Stir the powdered sugar, peanut butter, melted butter, and salt together in a medium bowl.

For the chocolate brownie batter:

2 1/2 cups granulated sugar

1 1/4 cups butter, melted

1 3/4 cups cocoa powder

1/2 teaspoon kosher salt

4 large eggs

1 cup all-purpose flour

2 teaspoons baking powder

1 teaspoon vanilla extract

Preheat the oven to 325 degrees F. Spray a 9x9-inch pan with non-stick spray, and line it with parchment.

Place the sugar, melted butter, cocoa, and salt in a large bowl and stir together until combined. Stir in the eggs. Add the flour and baking powder and mix until smooth.

Stir in the vanilla, then pour the batter into the prepared pan.

Drop the peanut butter swirl mixture in dollops over the surface of the brownie batter. Swirl with the tip of a knife.

Bake for 45 to 60 minutes, or until set around the edges but still soft towards the center.

Cool completely in the pan, then transfer to a cutting board and cut into squares.