"Add some crunch to a classic sandwich!..."
INGREDIENTS
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15 oz. canned tuna, drained (three 5-oz. cans, I like solid white albacore)
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⅓ c. reduced-fat mayonnaise
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2 tbsp. spicy brown mustard
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¼ c. dill relish
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6 corn tostadas
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1 c. sharp cheddar cheese, shredded
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1 head romaine lettuce, sliced into ¼” strips
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4 roma tomatoes, diced
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salt and pepper, optional