Homemade Oreo Cookies

1 pkg. Dark Chocolate Cake Mix
1/2 C Margarine, Melted
1 Egg, slightly beaten

Thoroughly mix all ingredients together. Shape dough into firm 1 inch balls. Place on ungreased cookie sheet 2 inches apart. Bake at 350 for 9-13 minutes or until set. Cool the cookies for one minutes on the cookie sheet, then remove them to racks and cool completely. While they are cooling make cream filling below.

Cream filling:
2 C Powdered Sugar
1/4 C Shortening
1/2 tsp Vanilla
Dash of Salt
1 Egg white

Mix all the ingredients together until well blended, then beat mixture on high speed for 2-3 minutes. Spread a generous amount on cookie and top with another cookie.