→ Tuna Salad
01 - 1 (5 oz) can tuna in water, drained
02 - 2 tablespoons mayonnaise
03 - 1 teaspoon Dijon mustard
04 - 1 small celery stalk, finely diced
05 - 1 tablespoon red onion, finely diced
06 - Salt and black pepper to taste
→ Sandwich Assembly
07 - 4 slices sandwich bread (white, whole wheat, or sourdough)
08 - 1 tablespoon butter, softened
09 - 4 slices Swiss or cheddar cheese
10 - 2 slices tomato (optional)