1 cup vegetable oil
2 cups sugar
2 eggs
1 cup sour milk
4 cup sifted flour
1 cup cocoa
2 teaspoon salt
2 teaspoon baking soda
For the 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 (or use a cookie scoop). Bake for about 12 minutes until they are springy to the touch. Let cool completely.
To make the 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.
