Double Chocolate Crumb Bars
["1/2 c. butter or margarine", "3/4 c. sugar", "2 eggs", "1 tsp. vanilla", "3/4 c. flour", "1/4 tsp. salt", "1/4 tsp. baking powder", "1/2 c. ground nuts", "2 Tbsp. cocoa", "2 c. miniature marshmallows", "1 c. chocolate chips", "1 c. creamy peanut butter", "1 1/2 c. Rice Krispies"]
["Cream butter and sugar.", "Beat in vanilla and eggs.", "Add flour, salt, baking powder, nuts and cocoa to creamed mixture.", "Spread in bottom of greased 9 x 13-inch pan and bake at 350\u00b0 for 15 minutes. Sprinkle marshmallows evenly on top.", "Bake 3 minutes more; cool."]
["butter", "sugar", "eggs", "vanilla", "flour", "salt", "baking powder", "ground nuts", "cocoa", "marshmallows", "chocolate chips", "peanut butter", "Rice Krispies"]