Chocolate Whoopie Pies

I think that I can only make these Whoopie Pies like once a year or if I know that I won't end up eating them all by myself.  They are so rich and decadent!  The original recipe called for shortening in the batter AND in the filling and I thought that sounded just awful!!  I mean, I made them that way the first time I ever made them (this was YEARS ago and I had no idea you could substitute different things for shortening) and they were amazing, but I just felt like they were just so bad for you!!  Not that they're good for you my way, but I definitely feel a little less guilty. :)  I substituted vegetable oil in the batter for the cookies and butter for the icing and they are just as good.  I should say just as great...you will love these!!    

1 cup vegetable oil
2 cups sugar
2 eggs
1 cup sour milk (add 1 tablespoon vinegar)
4 cup sifted flour
1 cup cocoa
2 teaspoon salt
2 teaspoon baking soda

Filling
4 cup confectioner's sugar
4 tablespoon flour
4 tablespoon milk
1 1/2 cup butter, room temp
2 teaspoon vanilla

Preheat oven to 350 degrees.  Combine the vegetable oil and sugar in a large bowl with an electric mixer.  Add eggs, one at a time.  Add milk.  In a small bowl, combine flour, cocoa, salt and baking soda.  Add flour mixture to liquid ingredients and mix until just combined.

Spray a sheet pan with non-stick cooking spray and drop by rounded spoonfuls on the sheet (I use a small ice cream scoop).  Bake for about 12 minutes until they are springy to the touch.  Let cool completely.

Filling
Combine all the ingredients in a medium bowl and mix with an electric mixer.  Spread on one side of the cookies after they are completely cool, then top with another cookie.