Mix tuna with celery, pickle, onion and mayo, then season to taste with salt and pepper. Divide evenly between the two English muffin halves, top each with a slice of cheddar cheese, and either bake for 5-10 minutes or place under the broiler for a couple of minutes to melt the cheese. Serve warm.
Recipe by Cooking With MicheleĀ® at https://cookingwithmichele.com/2011/07/classic-tuna-melt/