A delightful twist on the classic ham and cheese sandwich, baked to perfection.
Preheat your oven to 350°F (175°C).
Always preheat your oven to ensure even cooking.
In a mixing bowl, combine the butter, Dijon mustard, Worcestershire sauce, chopped onion, and poppy seeds until well mixed.
Soften the butter slightly for easier mixing.
Slice the sandwich rolls in half and spread the sauce on both sides of each roll.
Spread the sauce evenly for consistent flavor.
Layer slices of ham on the bottom half of each roll, then sprinkle with grated Swiss and Cheddar cheese.
Use a mix of cheeses for a rich flavor.
Place the top half of the roll on each sandwich, then wrap each sandwich individually in foil.
Ensure the foil is sealed to keep the sandwiches moist.
Bake the sandwiches in the preheated oven for 25-30 minutes, or until the cheese is melted and bubbly.
Check the sandwiches after 25 minutes to avoid overcooking.
Carefully unwrap the sandwiches and serve warm.
Serve with a side of salad or soup for a complete meal.