Ham Sandwiches - cooking recipe

Ingredients

4 hamburger buns
1/4 c. butter
2 Tbsp. horseradish-mustard
2 Tbsp. poppy seed
2 Tbsp. finely chopped onion

Preparation

Mix ingredients and spread on top and bottom of 4 buns.
Add thinly sliced boiled ham and 1 slice Swiss cheese.
Wrap in aluminum foil and heat 20 minutes at 350\u00b0.
Serves 4.