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

Preheat oven to 350 degrees. Thoroughly cream oil, butter and both sugars. Add vanilla and eggs. Sift dry ingredients. Stir in and blend. Roll a teaspoon of soft dough into a ball. press down lightly with glass bottom dipped in sugar. Lightly grease cookie sheet. Bake 10-12 minutes.

Makes 9 dozen.