# What You Need:
→ Tuna Salad
01 - 2 cans (5 oz each) tuna in water, drained
02 - 1/4 cup mayonnaise
03 - 1 tablespoon Dijon mustard
04 - 1 celery stalk, finely chopped
05 - 2 tablespoons red onion, finely chopped
06 - 1 tablespoon fresh parsley, chopped (optional)
07 - 1 teaspoon lemon juice
08 - Salt, to taste
09 - Black pepper, to taste
→ Sandwich
10 - 4 slices hearty bread (sourdough or whole wheat)
11 - 4 slices tomato
12 - 1 cup shredded cheddar cheese (about 4 oz)
13 - 2 tablespoons unsalted butter, softened
# How To Make It:
01 - Preheat the oven broiler or toaster oven to the broil setting.
02 - In a medium bowl, thoroughly mix tuna, mayonnaise, Dijon mustard, celery, red onion, parsley if used, lemon juice, salt, and black pepper until uniform.
03 - Arrange bread slices on a baking sheet and lightly spread butter on one side of each slice.
04 - Place bread buttered side up under the broiler for 1 to 2 minutes until lightly golden; remove from oven.
05 - Flip slices so toasted side is down, evenly spread tuna salad over each, top with a tomato slice, then sprinkle shredded cheese generously.
06 - Return to broiler and cook for 3 to 5 minutes, monitoring closely, until cheese is melted, bubbling, and edges are golden brown.
07 - Remove from oven, allow to cool slightly, and serve warm.