• 3 sweet onions , thinly sliced
  • 2 tablespoons honey
  • 1 tablespoon Dijon mustard
  • 1 tablespoon apple cider vinegar
  • black pepper
  • softened butter
  • 8 slices rye bread (or use pumpernickle bread)
  • 3/4 lb thinly-sliced deli roast beef
  • 8 slices American cheese
  • 1 Place the onions, honey, Dijon and vinegar in a saucepan; cook stirring over medium heat until the onions are tender (about 8-10 minutes) then season with black pepper.
  • 2 Butter both sides of bread.
  • 3 Top 4 slices bread with roast beef, then 2 slices cheese and 1/4 of the onion mixture.
  • 4 Top with remaining bread slice.
  • 5 Heat an electric panini maker, place a sandwich in and close lid; heat until golden.