"This ultimate tuna melt is made with thick buttery bread, creamy tuna salad and a slice of melted cheddar cheese for the best comfort food...."
INGREDIENTS
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2 (5-ounce) cans tuna (, drained)
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1/3 cup mayonnaise
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1-2 teaspoons Dijon mustard
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1 Tablespoon relish
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1 stalk celery (, diced)
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2 Tablespoons finely chopped red onion
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1-2 Tablespoons chopped parsley (, chives, or dill, optional)
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3/4 Kosher salt (, more to taste)
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1/4 Ground black pepper (, more to taste)
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8 (1/2" thick) slices sour dough (or French bread)
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4 slices cheddar cheese (, provolone, or Swiss cheese)
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2-3 Tablespoons salted butter (, softened)