Christmas Cream Wafers

Wafer:
1 c Butter or margarine, softened
1/2 c Whipping cream
2 c Flour

Filling:
1/4 c Butter
3/4 c Confectioner's sugar
1 Egg yolk
1 ts Vanilla
Red or green food coloring
 
Combine wafer ingredients and chill.  Roll out on floured surface to 1/2"  thickness.  Cut in small rounds. Transfer to waxed paper covered with 1 cup sugar. Thoroughly coat both sides and place on cookie sheet. Prick with fork and bake at 350 deagrees for 7-10 minutes. Cool. Combine filling ingredients. Spread filling on wafers and sandwich two wafers together.