Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     1/4  Cup           Butter Or Margarine -- softened
   8      Ounces        Cream Cheese -- softened
   1                    Egg Yolk
     1/4  Teaspoon      Vanilla
   1      Package       Cake Mix (Any Flavor)

Preparation:

Cream margarine and cheese together. Blend in egg yolk and vanilla. Add cake mix 1/3 at a time; mixing well after each addition. Cover and chill 30 minutes. Drop by rounded teaspoonfuls on ungreased cookie sheet. Bake at 375 degrees for 8 to 10 minutes.