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Ingredients
- 1/3 cup butter, melted
- 2 tablespoons prepared mustard
- 1 small chopped onion
- 1 tablespoon poppy seeds
- 6 hamburger buns
- 6 slices ham
- 6 slices Swiss or American cheese
Preparation
Step 1
Combine butter, mustard, onion, and poppy seeds. Spread on inside of hamburger buns. Place 1 slice ham and 1 slice cheese on each bun. Spread sauce on top of buns. Heat in oven on cookie sheet 15 minutes at 350 degrees.