Maple Tuna Olive Toastie
Ingredients:
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2 tablespoons butter
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½ large sweet red onion, thinly sliced
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1 tablespoon maple syrup
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2 (5 ounce) cans tuna, drained
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2 tablespoons creamy salad dressing (such as Miracle Whip®)
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salt and ground black pepper to taste
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1 (12 ounce) loaf Italian olive bread
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8 ounces shredded Cheddar cheese