– 8 oz pasta shells – 1 tablespoon olive oil – 1 pound ground beef – ½ medium onion – 2 cloves garlic – 1 ½ teaspoons Italian seasoning – 1 teaspoon paprika – ½ teaspoon mustard powder – 2 tablespoon all-purpose flour – 2 cups beef stock – 1 15 ounce can tomato sauce – ¾ cup heavy cream – Salt and pepper to taste – 6 oz shredded cheese