7-Up Cake Cake 1 small box vanilla instant pudding 1 (18.25 ounce) box white or yellow cake mix 3/4 cup vegetable oil 4 eggs 1 (10 ounce) 7-Up® Combine pudding mix, cake mix and vegetable oil. Add eggs, one at a time, beating well after each addition. Blend 7-Up® into batter. Pour into three 9-inch cake pans that have been greased and floured. Bake at 350 degrees F for 20 minutes. Remove from oven; let stand for 10 minutes. Remove layers from pans and cool on racks. Place Filling between layers and on top of cake. Variation: Use lemon cake mix and instant pineapple pudding mix. Filling 1 1/2 cups granulated sugar 2 tablespoons flour 2 eggs 1/2 cup (1 stick) butter or margarine 1 (8 ounce) can crushed pineapple, drained 1 (4 ounce) can coconut 1/2 cup nuts Mix sugar and flour. Add slightly beaten eggs and butter or margarine. Place in top of double boiler and cook until consistency of syrup. Add remaining three ingredients.