INGREDIENTS
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2 cups uncooked elbow macaroni
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1 tablespoon butter
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1 egg beaten
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1 cup milk
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1 1/2 cups shredded sharp Cheddar cheese
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1 1/2 cups shredded mozzarella cheese
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1/2 cup seasoned dry bread crumbs
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2 teaspoons olive oil
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1/2 teaspoon salt