Grilled Cheese Sandwich On Rye - cooking recipe

Ingredients

softened butter, as needed
2 slices seeded rye bread
1 tablespoon sweet onion, finely minced
1 slice muenster cheese
1 slice deli ham
4 slices sharp cheddar cheese (from a 10-ounce bar, such as Cabot or Cracker Barrel)
1 slice American cheese
Dijon mustard, as needed
ketchup, as needed

Preparation

Heat a frying pan over medium-low heat.
Butter slices of bread.
Spread the opposite side of one slice of bread with the ketchup and mustard. Sprinkle with the onions. Then layer on the Muenster cheese, cheddar cheese, ham, and American cheese.
Lay the half-assembled sandwich into the pan, and then top with the second slice of of buttered bread.
Brown both sides of the sandwich, until cheese has melted.