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

Mix butter, oil and sugars until creamy. Add eggs and vanilla. Add flour, cream of tartar and soda; mix. Roll into walnut size and flatten with sugared glass (colored sugar may be used). Bake on ungreased cookie sheet for 8 to 10 minutes at 350 degrees until cookies are lightly browned. Makes about 10 dozen.