French Buttercream Cookies

1 1/2 c Powdered sugar

1 ts Soda

1 ts Cream of tartar

1/4 ts Salt

1 c Softened margerine

1 Egg

1 ts Vanilla

2 1/4 c Flour

Food coloring Colored sugars Mix all ingredients except flour and food coloring well. Add flour and blend at low speed. If desired, tint with food coloring. Chill dough 15-30 minutes before shaping. Shape dough in 3/4 inch balls, Place on greased cookie sheet, flatten with fork sprinkle with colored sugars. Bake at 350 5-8 minutes until set but not brown. Let stand on cookie sheet 1 minute before removing. -----