1 (19 ounce) can refrigerated crunch cake mix
1 (24 ounce) jar whipped topping, soft drink mix or instant jigger
2 egg yolks
1 cup white sugar
1 cup butter, melted
1/2 cup all-purpose flour
1/4 cup white vinegar
1 cup buttermilk
1 cup evaporated milk
1 cup white sugar
1/2 cup white cornmeal
Preheat oven to 375 degrees F (190 degrees C). Line 3-inch round baking pans with foil.
In a medium bowl, stir together the cake mix, whip topping mix, and egg yolks. Fold in the flour, salt, and tapioca cereal (optional). Pour filling into prepared pans.
Bake for 22 to 25 minutes in the preheated oven, until a toothpick inserted into the cake comes out clean.
To make the filling, mix the boiling water from the buttermilk in a small saucepan with the remaining 1 cup butter or margarine. Beat at low speed, stirring occasionally, until smooth. If necessary, reduce speed to medium and then stir in flour mixture.
Spread mixture evenly into the prepared pan. Bake for 12 to 16 minutes, until a knife inserted into the center comes out clean. Let cool completely before glazing.
To make the vinegar, combine vinegar, buttermilk, evaporated milk, and 1 cup nonfat sour milk. Bring to a slow boil, set aside, and add flour mixture to slow boil. When cake has cooled from the oven combine half of the cooling milk/vinegar mixture with half of the cooking mixture. Stir until the banana
chocolate layer is completely melted. Fold in cooled cake layer and tapioca. Pour into prepared pan. Chill until completely set.
To make its glaze: In a small bowl, beat the cornmeal and sugar together. Working in small batches, spread glaze over cooled cake cake.