• 1 cup (two sticks) butter
• 1 cup sugar
• 1 cup powdered sugar
• 1 cup vegetable oil
• 2 eggs
• 1 tsp cream of tartar
• 1 tsp salt
• 4 cups flour
• 1 tsp baking soda
• 1 tsp vanilla

Blend the first four ingredients together. Beat in the eggs, then add the remaining dry ingredients. Stir well. Refrigerate the dough for a while. Roll the dough into balls; roll the balls in sugar. Flatten each ball with the bottom of a glass. Bake at 350 degrees for 10 minutes.