1 c. butter
1 1/2 c. powdered sugar
1 c. white sugar
1 c. oil
2 eggs
1 tsp. vanilla
4 c. flour
1 tsp. salt
1 tsp. cream of tartar
1 tsp. baking soda

Cream butter, powdered sugar, white sugar, oil, eggs, and vanilla. Mix in flour, salt, cream of tartar, and baking soda. Refrigerate overnight. Roll into balls. Bake at 350 degrees for 10-12 minutes. Makes 75 cookies.