Butterfinger Cake
["1 box yellow cake mix", "4 to 6 Butterfingers", "1/2 c. margarine", "2 c. powdered sugar", "12 oz. Cool Whip"]
["Prepare cake mix; let cool. Crush Butterfingers; set aside. Melt margarine in saucepan. Mix in sugar and mix well. Remove from heat. Stir in Cool Whip and mix well. Pinch 1/2 of cooled cake into punch bowl or trifle dish. Pour 1/2 of Cool Whip mixture over cake. Sprinkle layer with 1/2 crushed Butterfingers. Repeat layers and chill."]
["yellow cake mix", "Butterfingers", "margarine", "powdered sugar"]