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Add sweet potatoes to a large pot, then cover with cold water by 1 inch. Add 2 teaspoons salt and bring to a boil. Once the potatoes reach a boil, cook for 5 minutes, or until fork tender. Drain and place on the prepared baking sheet.
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In a small bowl, combine butter, remaining salt, Italian seasoning, garlic, black pepper and crushed red pepper.
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Pour butter mixture over the potatoes and turn to evenly coat. Use the bottom of a cup to smash the potatoes carefully.
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Sprinkle cheese on top of the potatoes and bake for 30 minutes, rotating the pans from top to bottom and front to back halfway through cooking time.
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Remove from oven and let cool slightly before serving.