1 tb Margarine Or Butter 1 Onion; Thinly Sliced 4 oz Mushrooms; 1 can, * 1/2 ts Worcestershire Sauce 1/8 ts Pepper * Use 1 4-oz can of mushroom stems and pieces. ~------------------------------------------------------------------------- Melt margarine in a small skillet. Add onion slices and cook and stir until tender. Stir in remaining ingredients and heat through. Serve, hot, over patties.