# 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 (approximately 4 oz)
12 - 2 tablespoons unsalted butter, softened
# Directions:
01 - Turn on oven broiler or set toaster oven to broil setting to prepare for toasting.
02 - Combine tuna, mayonnaise, Dijon mustard, celery, red onion, parsley, lemon juice, salt, and black pepper in a medium bowl. Mix thoroughly until all ingredients are evenly distributed.
03 - Arrange bread slices on a baking sheet. Spread softened butter lightly on one side of each slice. Place buttered side up under broiler for 1-2 minutes until golden brown.
04 - Flip bread slices so toasted side faces down. Spread tuna salad evenly over each slice. Place tomato slice on top of tuna mixture, then cover generously with shredded cheese.
05 - Return baking sheet to broiler for 3-5 minutes. Watch carefully to prevent burning. Remove when cheese is completely melted, bubbling, and edges are golden brown.
06 - Let sandwiches cool for 2-3 minutes before serving warm.