Can I use low-fat or reduced fat-butter or margarine for baking?
No. Any butter or margarine that is labeled reduced fat or comes in a tub should not be used. When buying stick margarine, make sure that the label indicates that the “margarine” contains at least 70% vegetable oil. Anything less will produce unsatisfactory results. To assure the best baking results, we recommend using stick butter that is not a reduced fat variety.