Triple Layer Chocolate Bars
["1 1/2 c. graham cracker crumbs", "1/2 c. cocoa, divided", "1/4 c. sugar", "1/3 c. butter, melted", "1 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. semi-sweet chocolate chips"]
["Combine crumbs, 1/4 cup cocoa, sugar and butter; press firmly on bottom of 13 x 9-inch pan.", "In large bowl, beat condensed milk, flour, remaining 1/4 cup cocoa, egg, vanilla and baking powder. Stir in nuts.", "Spread evenly over crust; top with chips.", "Bake at 350\u00b0 for 20 to 25 minutes or until set.", "Cool; cut into bars."]
["graham cracker crumbs", "cocoa", "sugar", "butter", "condensed milk", "flour", "egg", "vanilla", "baking powder", "nuts", "semi-sweet chocolate chips"]