1 c. butter
1 1/2 c. sugar
2 eggs
2 tsp. cream of tartar
1 tsp. baking soda
1/4 tsp. salt

Heat oven to 400 degrees. Roll into balls the size of small walnuts. Bake on ungreased cookie sheet. Roll in cinnamon and sugar. Bake 8 to 10 minutes.