Ingredients (2 servings)

Sandwich Base

• 4 slices sourdough bread
• 1 can tuna (in water or oil, drained)
• ½ cup mayonnaise
• 1 tbsp mustard (optional)
• ½ small onion (finely chopped)
• 1 celery stalk (finely chopped, optional for crunch)
• Salt & black pepper to taste

Melt Layer

• 1–1.5 cups shredded cheese (cheddar, mozzarella, or mix)
• 1 tbsp butter (for grilling)
• Chili flakes or paprika (optional)

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🍳 Step-by-Step Recipe

1. Make Tuna Filling

• In a bowl, mix tuna, mayonnaise, mustard, onion, and celery
• Season with salt and black pepper
• Stir until creamy and well combined

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2. Prepare Bread

• Lightly butter one side of each sourdough slice
• Place bread butter-side down on a pan or tray

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3. Assemble Sandwich

• On unbuttered side, add tuna mixture evenly
• Top with generous layer of cheese
• Close sandwich with another slice of bread (butter side out)

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4. Grill the Melt

• Heat pan on medium-low
• Cook sandwich 3–4 minutes per side
• Press gently until bread is golden and cheese melts

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5. Finish & Serve

• Slice diagonally
• Sprinkle chili flakes or paprika on top
• Serve hot while cheese is gooey

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🔥 Pro Tips

• Add pickles or jalapeños for extra tang
• Mix cheddar + mozzarella for best melt + flavor
• Cook on low heat so cheese melts fully before bread burns
• Serve with fries or soup for classic diner style