Big Mama's Party Ham Rolls

Ingredients:
2 packages of party rolls
1 small onion, chopped finely
1 stick of soften butter or margarine
1 lb cooked ham, thinly sliced
1 tbsp. Worcestershire sauce
3 tbsp. prepared mustard

Directions:
Preheat oven to 400°. Cream butter and add Worcestershire sauce, mustard and onion. Split party rolls, divide and spread mixture on the tops and bottom of the rolls. Divide cooked ham evenly, place on top of mixture. Put rolls back together and place in aluminum pans they came in and wrap with foil. Bake for 10 minutes. Cut into individual rolls and serve hot.