Kosher salt and freshly ground black pepper to taste
1cupshredded cheddar cheeseor cheese of your choice
Instructions
Preheat a toaster oven or the regular oven to 375°F. Toast the English muffin halves for about 3 minutes until very lightly browned. Remove and leave the oven on.
Mix the tuna, mayo, onion, celery, relish, mayo, mustard, in a medium-sized bowl. Add the salt and pepper and blend well.
Divide the tuna over the 4 muffin halves. Top each with 1/4 of the shredded cheese and return to the oven for about 5 minutes until the cheese has melted. Serve warm.