Cream:
1/2 c butter
1/2 c crisco
1 1/2 c sugar
2 eggs
2 tsp vanilla
Blend in:
2 3/4 c flour
2 tsp cream of tartar
1 tsp baking soda
1/4 tsp salt
Shape dough into balls.
Mix:
2 Tbsp sugar
2 tsp cinnamon
Roll dough balls in cinnamon mixture.
Place on ungreased baking sheet.
Bake @ 400, 8-10 minutes, or until set.
Cool 4 minutes to let set before transferring to cooling racks.