In a bowl add drained tuna and break apart with a fork. Add chopped celery, chopped pickles, greek yogurt and lime juice. Mix until thoroughly combined. Add S&P to taste.
Use a toaster to lightly toast english muffin halves.
Line english muffins on a rimmed cookie sheet or toasting pan. Top each english muffin with equal parts tuna (approx ¼ C per english muffin). Top with equal parts cheddar cheese.
Broil for 3-4 minutes until cheese is melted and begins to bubble. Watch carefully as not to burn. Transfer to a plate and serve immediately.
Recipe by Good Thyme Kitchen at https://www.goodthymekitchen.com/classic-tuna-melt/