Mock Lemon Meringue Cake
["1 pkg. Duncan Hines II lemon supreme cake mix", "2 c. prepared lemon pudding and pie filling", "1 container (8 oz.) frozen whipped topping, thawed (Cool Whip)"]
["Bake cake as directed on package.", "Bake in a 10-inch tube pan. Cool and cut into three layers. Stir pudding and pie filling until smooth.", "Spread 1/3 of filling between each layer and on top of cake.", "Frost the layers and sides with Cool Whip.", "Keep refrigerated."]
["Duncan", "frozen whipped topping"]