"Your new favorite pasta bake!..."
INGREDIENTS
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1 lb rigatoni pasta
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2 tablespoon olive oil
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1 yellow onion, diced
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3 cloves garlic, minced
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1 lb Italian sausage
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1 (1 lb) can tomato puree
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1 ½ teaspoons salt
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1 teaspoon black pepper
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1 teaspoon oregano
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2 1/2 cups shredded mozzarella cheese, divided
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½ cup parmesan cheese, shredded