INGREDIENTS
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Ingredients
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1-1/2 cups uncooked small pasta shells
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1 pound lean ground beef (90% lean)
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1 cup sliced fresh mushrooms, divided
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1/2 cup chopped onion
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1/2 cup chopped green pepper
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1 can (15 ounces) tomato sauce
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1 teaspoon dried oregano
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1/2 teaspoon garlic powder
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1/4 teaspoon onion powder
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1/8 teaspoon pepper
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1/2 cup shredded part-skim mozzarella cheese, divided
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4 teaspoons grated Parmesan cheese, divided