1 c butter
1-1/2 c sugar
2 eggs
2-3/4 c flour
2 tsp cream of tartar
1 tsp soda
1/2 tsp salt

Cream butter and sugar; add eggs and mix. Mix flour, cream of tartar, soda and salt in second bowl. Add dry ingredients to egg mixture; let stand in refrigerator until cool. Roll into small balls. Roll balls in cinnamon and sugar mixture (1/2 c sugar and 3 tbsp cinnamon).

Spray cookie sheet with non-stick cooking spray. Place balls about 2 inches apart on the cookie sheet. Bake in 400 degree oven for 8 to 10 minutes.