# What You Need:
→ Tuna Salad
01 - 1 can (5 oz) tuna, drained
02 - 2 tablespoons mayonnaise
03 - 1 teaspoon Dijon mustard
04 - 1 stalk celery, finely chopped
05 - 1 tablespoon red onion, finely chopped
06 - 1 teaspoon lemon juice
07 - Salt and freshly ground black pepper, to taste
→ Sandwich
08 - 4 slices sandwich bread (white, whole wheat, or sourdough)
09 - 4 slices cheddar cheese
10 - 2 tablespoons unsalted butter, softened
# Step-by-Step Guide:
01 - Combine drained tuna, mayonnaise, Dijon mustard, celery, red onion, lemon juice, salt, and pepper in a bowl, mixing until well incorporated.
02 - Arrange bread slices on a clean surface. Spread tuna salad evenly on two slices and layer with two slices of cheddar cheese each.
03 - Cover with the remaining bread slices to form two complete sandwiches.
04 - Spread softened butter on the outer sides of each bread slice, covering both sides of each sandwich.
05 - Heat a nonstick skillet or griddle over medium heat until adequately hot.
06 - Place sandwiches buttered side down on the skillet. Press gently and cook for 3 to 4 minutes until golden brown.
07 - Flip sandwiches carefully and cook the other side for an additional 3 to 4 minutes until bread is golden and cheese has melted.
08 - Remove from skillet, slice each sandwich in half, and serve immediately.