The Ultimate Tuna Melt – Cook with Bon Appétit

Ingredients

• 1 3.2-oz. Fishwife Albacore Tuna in Spicy Olive Oil, drained
• 1⁄2 small red onion, finely chopped
• 1⁄2 celery stalk, finely chopped
• 1⁄4 cup mayonnaise
• 2 Tbsp. finely chopped dill
• 11⁄2 tsp. drained capers or chopped pickled jalapeños, plus 11⁄2 tsp. brine
• 11⁄2 tsp. fresh lemon juice
• Freshly ground pepper
• 1 Tbsp. unsalted butter, room temperature
• 4 slices Pullman or sourdough bread
• 2 slices American cheese or sharp cheddar