1 c. white sugar
1/2 c. brown sugar
1/2 c. butter
1/2 c. butter flavor Crisco
1 egg
2 c. flour
1 tsp. cream of tartar
2 tsp. baking soda
1/2 tsp. salt
1 tsp. vanilla
2 c. chocolate chips

Beat butter, shortening, brown and white sugar and egg. Add combined dry ingredients and vanilla. Stir in chocolate chips. Bake at 350 degrees for 8-10 minutes.