Chocolate Chess Squares
["2 c. flour", "1 c. butter", "6 Tbsp. cocoa", "4 Tbsp. butter", "10 oz. evaporated milk", "1 c. chopped nuts", "2 c. powdered sugar", "3 c. sugar", "1/4 tsp. salt", "4 eggs", "2 tsp. vanilla"]
["Combine flour, powdered sugar and 1 cup butter; press in 13 x 9-inch pan.", "Bake at 350\u00b0 for 15 minutes or until lightly browned."]
["flour", "butter", "cocoa", "butter", "milk", "nuts", "powdered sugar", "sugar", "salt", "eggs", "vanilla"]