Whoopie Pies from Cake Mix

1 (18.25 oz) Betty Crocker Supermoist Cake Mix, Devils Food (with
pudding in the mix)
3/4 cups water
1/2 cup vegetable oil
3 eggs

1 cup milk
5 Tbs all-purpose flour

1 stick (1/4 lb) butter, softened
1/2 cup shortening, softened
1 cup sifted confectioners sugar
1/4 tsp salt
2 tsp vanilla extract

It's important to use a cake mix that contains pudding in order for
the Woopie Pies to have the correct consistency. If a regular cake mix
is used, a 3 oz package of chocolate instant pudding mix should be
mixed into the cake batter before baking.

To make cakes - Preheat oven to 350F. Prepare devil's food cake mix
according to directions on package, but use only 3/4 cup of water, the
1/2 cup of oil and the 3 eggs. Drop the batter onto greased cookie
sheet forming 2-1/2 to 3 inch circles by smoothing out batter with the
back of a spoon. Makes about 20 circles. Bake about 12 minutes or
until a toothpick inserted into center comes out clean. Allow to cool.

To make filling - Mix milk and flour in bowl. Stir out lumps. Using a
saucepan, stir in milk and flour, cook, stirring constantly, over
medium-low heat, until a thickend paste is formed. Allow to cool.

In a bowl, cream butter and shortening. Mix in confectioners sugar,
salt and vanilla. Beat with mixer on medium speed until blended.

Begin adding, a tablespoon at a time, while beating, the cooled milk/
flour mixture to the butter/sugar mixture. Beat until combined
mixtures are light and fluffy.

Flip the cooked, cooled, cakes over and spoon a dollop of filling onto
half of the cakes. Place the other half of the cakes on top of filling
to form Woopie pies.

Make about 10 Woopie Pies.