combine margarine and sugar in bowl; beat at medium speed until light and fluffy. Add egg substitue and vanilla beat well.
combine flour, baking powder and soda,and salt.Add to creamed mixture;beat well. Stir in butterscotch chips.
spoon mixture into a 13-x9-inch baking pan coated with cooking spray.Bake at 350 for 25 minutes or until a wooden pick inserted in center comes out clean. Let completely on a wire rack. yields 21/2 dozens (serving size 1 brownie) ppv=3