Marbled Peanut Butter Brownies

Brownies:

1/3 cup butter

2 squares unsweetened chocolate

2/3 cup flour

1/2 teaspoon baking powder

1/4 teaspoon salt

2 eggs 

1 cup sugar

1 teaspoon vanilla

Topping:

1/3 cup peanut butter

2 tablespoons butter, softened

2 tablespoons sugar

1 tablespoon flour

1 egg

Brownies:

Melt butter and chocolate together. Set aside to cool.
In a small bowl mix flour, baking powder and salt together.
In a large mixing bowl, beat the eggs and sugar together until light. Add the vanilla. Stir in the flour mixture, and the cooled chocolate mixture.
Pour into a greased 8 inch square pan.

Topping:

Beat all ingredients together until smooth.
Drop spoonfuls of peanut butter mixture over the brownie layer. Run a knife through the cake to marble.
Bake at 350 degrees F. for 25 to 30 minutes. Cool, and cut in squares.