1 pkg. Pillsbury Plus dark chocolate cake mix
1/2 c. butter, melted
1 egg, slightly beaten

FILLING:

2 c. powdered sugar
1/4 c. shortening
1/2 tsp. vanilla
1 egg white

Heat oven to 350 degrees. In large bowl combine all cookie ingredients. Mix well. Firmly shape dough into 1-inch balls. Place 2 inches apart on ungreased cookie sheets. Bake for 9 to 13 minutes or until set. Cool 1 minute. Remove from cookie sheets and cool completely.

In small bowl combine 1/2 cup of the powdered sugar with shortening, vanilla and egg white; blend well. Add remaining powdered sugar; beat until smooth and creamy. Spread heaping teaspoon of filling between 2 cookies; repeat with remaining cookies. Yield: 24 sandwich cookies.