1 stick butter, melted
1 heaping tbsp. salad mustard
1 heaping tsp. poppy seeds
1 tbsp. dehydrated onion flakes
12 sesame seed buns
12 slices ham
12 slices Swiss cheese

Mix first 4 ingredients. Brush buns with butter mixture, top with ham and cheese. Wrap sandwiches in foil and bake in 350 degree oven for 15 to 20 minutes.