Mushroom Onion Topper

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.