2 1/4 c. all-purpose flour
2 c. packed brown sugar
1/2 c. butter, softened
1 c. milk
1 c. chocolate chips
1 tsp. baking powder
1/2 tsp. baking soda
1 c. peanut butter
3 eggs
1 tsp. vanilla

In large mixer bowl stir together flour, brown sugar, baking powder and soda. Add peanut butter and butter; blend at low speed of electric mixer until crumbly. Remove 1 cup of the crumb mixture; set aside. To remaining crumbs in bowl, add the milk, eggs, and vanilla. Blend at low speed until moistened; beat 3 minutes at medium speed. Pour batter into ungreased 13 x 9 x 2 inch baking pan. Sprinkle the chocolate pieces over batter; sprinkle reserved crumbs atop. Bake in 350 degree oven for 40 to 45 minutes or until cake tests done. Cool; cut in squares to serve.