I used a Duncan Hines Dark Chocolate Fudge Cake mix with Butterscotch Instant Pudding Mix because that is what I had... Old Goat gave the recipe two thumbs up and said that they taste more like a "Suzy Q" than a Whoopie Pie... Filling makes the difference. You can also make this with a Marshmallow Fluff
Cake:
1 box chocolate fudge or devil's food cake mix
1 sm. box instant chocolate pudding mix
1/2 cup flour
1/3 cup vegetable oil
3 lrg. eggs
1 cup water
Cake Instructions:
Mix all ingredients together with a electric mixer for approximately 3 to 5 minutes.Spoon onto a greased cookie sheet and bake for 15 minutes at 350 degrees. When baked place cookies on waxed paper or rack to cool.
For Filling
8 oz. cream cheese, softened
1/2 cup butter, softened
1 teaspoon vanilla extract
3 cups confectioners' sugar
To make the filling, cream together the cream cheese, butter and vanilla; sift in the powdered sugar and beat until smooth.