Instructions

  1. In a bowl, combine the butter, mustard, onion and poppy seeds.
  2. Spread over cut sides of buns (moderatly- not thick).
  3. Layer ham and cheese on the bottom halves.
  4. Replace tops.
  5. Wrap each sandwich in foil.
  6. Place on baking sheet.
  7. Bake at 350 degrees for 25-30 minutes or until cheese is melted.