Stuffed Jumbo Shells
["1/2 (12 oz.) pkg. jumbo shells (20)", "1 Tbsp. salad oil", "1 1/2 lb. ground beef", "1 medium onion, minced", "1 garlic clove, minced", "1 c. celery", "2 tsp. salt", "1 tsp. pepper", "1 c. walnuts, chopped", "2 (15 1/2 oz.) spaghetti sauce", "2 Tbsp. grated Parmesan cheese"]
["One hour before serving, prepare shells as label directs; drain well.", "Heat salad oil, ground beef, onion, garlic, celery, salt and pepper until meat is well browned.", "Stir in walnuts and 1/2 jar spaghetti sauce.", "Stuff rounded tablespoonful of meat mixture into each shell.", "Reserve remaining meat mixture.", "Spoon 1 cup sauce into 10 x 2-inch casserole.", "Sprinkle with remaining meat mixture.", "Spoon remaining sauce evenly in and around shells, sprinkle with cheese.", "Bake in 350\u00b0 oven for 20 minutes.", "Makes 6 servings."]
["jumbo shells", "salad oil", "ground beef", "onion", "garlic", "celery", "salt", "pepper", "walnuts", "spaghetti sauce", "Parmesan cheese"]