Baked Ham and Cheese Sliders

Bahan-bahan (15 porsi)

• ½ cup (1 stick) butter, (melted)
• 1 tablespoon honey mustard
• 1 tablespoon minced dried onion
• 2 teaspoons Worcestershire sauce
• 15 King's Hawaiian Rolls
• 16 ounces thinly sliced deli ham
• 10 slices Havarti cheese