# What You'll 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
07 - 1 teaspoon lemon juice
08 - Salt and black pepper, to taste
→ Sandwich Assembly
09 - 4 slices hearty bread (sourdough or whole wheat)
10 - 4 slices tomato
11 - 1 cup shredded cheddar cheese
12 - 2 tablespoons unsalted butter, softened
# How to Make It:
01 - Preheat your oven broiler or set a toaster oven to broil setting.
02 - Combine tuna, mayonnaise, Dijon mustard, celery, red onion, parsley, lemon juice, salt, and black pepper in a medium bowl. Mix until thoroughly incorporated.
03 - Arrange bread slices on a baking sheet. Lightly spread softened butter on one side of each slice. Place buttered side up under the broiler for 1-2 minutes until golden brown.
04 - Flip the toasted slices. Spread tuna salad evenly over each slice. Top with a tomato slice, then generously sprinkle with shredded cheese.
05 - Return to the broiler for 3-5 minutes. Watch carefully until cheese melts completely, bubbles, and turns golden brown around the edges.
06 - Remove from oven and let cool for 1-2 minutes before serving warm.