Banana Cake with Peanut Butter Frosting

1 butter recipe yellow cake mix 1 (3 1/2 ounce) package instant vanilla pudding 1/4 cup water 1/3 cup oil 1 cup mashed ripe banana 3 eggs 1 Heat oven to 350[...]

1/2 cup unsalted butter , softened 1 cup granulated sugar 1/2 cup egg substitute , beaten until frothy (Egg Beaters) 1 teaspoon vanilla extract 3/4 cup[...]

1 (18 1/4 ounce) package yellow cake mix with pudding 1 large ripe banana , mashed (1/2 cup) 1 cup water 3 eggs 1 Heat oven to 350 (325 for dark pan). Grease[...]