1 c. butter
3/4 c. oil
1 c. brown sugar
1 c. white sugar
1 egg
2 tsp. vanilla
1 tsp. cream of tartar
1 c. oatmeal
2 c. Rice Krispies
12 oz. pkg. chocolate chips
1 tsp. baking soda
1 tsp. salt

Mix all together in 1 bowl. Drop and flatten slightly on cookie sheet. Bake at 350 degrees for 10-12 minutes.