Blueberry Stack Cake
["1 stick margarine", "4 eggs", "2/3 c. milk", "1 tsp. vanilla", "1 box butter recipe cake mix"]
["Add all ingredients to cake mix and blend. Bake in 6 thin layers or 3 layers and split them.", "Ice with filling.", "Have layers completely cool."]
["margarine", "eggs", "milk", "vanilla", "butter"]