1 c. powdered sugar
1 c. granulated sugar
1 c. butter & butter (half & half)
1 c. cooking oil
2 eggs
1 tsp. vanilla
1 tsp. baking soda
4 1/2 c. flour
1 tsp. cream of tartar
1 tsp. salt

Cream fats. Add eggs and vanilla; beat well. Add dry ingredients and beat well. Refrigerate to chill. Make into walnut size balls and press down on cookie sheet with glass. Bake at 375 degrees until slightly brown.