Peanut Butter Marbled Brownies - cooking recipe

Ingredients

Peanut Butter Filling (recipe follows)
1 c. (2 sticks) butter or margarine
2 c. sugar
2 tsp. vanilla extract
3 eggs
3/4 c. Hershey's cocoa
1 1/4 c. all-purpose flour
1/2 tsp. baking powder
1/4 tsp. salt
1 c. Hershey's milk chocolate chips

Preparation

Heat oven to 350\u00b0.
Grease a 13 x 9 x 2-inch baking pan. Prepare Peanut Butter Filling.