Ingredients

1/2 cup butter, melted2 tablespoons prepared mustard1 tablespoon dried minced onion1 tablespoon poppy seeds2 to 3 teaspoons sugar8 hamburger buns, split8 slices Colby cheese16 thin slices deli ham (about 1 pound)1-1/2 cups shredded part-skim mozzarella cheese

Preparation

Preheat oven to 350°. In a small bowl, combine the butter, mustard, onion, poppy seeds and sugar. Place bun bottoms, cut side up, in an ungreased 15x10x1-in. baking pan. Top each with Colby cheese, ham and mozzarella. Brush with half the butter mixture.

Replace bun tops. Brush with remaining butter mixture. Bake, uncovered, until cheese is melted, 10-15 minutes.