1 1/2 c. graham cracker crumbs
1/2 c. cocoa (divided)
1/4 c. sugar
1/3 c. butter, melted
1 (14 oz.) can sweetened condensed milk
1/4 c. flour
1 egg
1 tsp. vanilla
1/2 tsp. baking powder
3/4 c. chopped nuts
2 c. (12 oz.) semisweet chocolate chips

Heat oven to 350 degrees. Combine crumbs, 1/4 cup cocoa, sugar and butter, press firmly on bottom of 13 x 9 inch baking pan. Beat milk, flour, 1/4 cup cocoa, egg, vanilla and baking powder. Stir in nuts. Spread evenly over prepared crust, top with chips. Bake 20-25 minutes. Cool, cut into bars.