1 c sugar
1 c butter (or margarine, or combination)
1 tsp vanilla
2 1/2 c flour
1 tsp. cream of tartar
1 tsp soda
Cream sugar, butter, egg, and vanilla together until light and fluffy. Add everything else, mixing well after each addition.
Form into walnut-sized balls. Place on greased cookie sheet (or parchment) and flatten each with the bottom of a sugared glass.
Bake at 350 for 10-15 minutes or until lightly browned. Yield: about 3 dozen
These are the Valentine cookies I bake when I don't have time for cut-out cookies.
Source: "Life Saver" Cookbook (Favorite Recipes of Home Economics Teachers series)