1 c. sugar
1 c. powdered sugar
1 c. butter
1 c. cooking oil
2 eggs
4 1/2 c. flour
1 tsp. baking powder
1 tsp. cream of tartar
1 tsp. vanilla

Combine first 4 ingredients. Beat well. Add eggs and beat again. Add remaining ingredients and mix well. Drop small balls of dough on cookie sheet and flatten slightly with a fork. Bake at 375 degrees for 10-12 minutes.