1/2 c. butter, softened
1/4 c. peanut butter
1 c. sugar, granulated
1 c. packed light brown sugar
3 eggs
1 tsp. vanilla
2 c. unsifted all-purpose flour
2 tsp. baking powder
1/4 tsp. salt
1/2 c. (5.5 oz.) can Hershey's syrup

Blend butter and peanut butter in large mixing bowl. Add sugar and brown sugar; beat well. Add eggs one at a time, beating well after each addition. Blend in vanilla. Combine flour, baking powder and salt. Add to peanut butter mixture.

Spread half the batter in greased 13 x 9 inch pan. Spoon syrup over top. Carefully spread with remaining batter. Swirl with spatula or knife for marbled effect. Bake at 350 degrees for 35-40 minutes or until lightly browned.