Macaroni-Hamburger Casserole(For Electric Skillet)  
["2 Tbsp. vegetable oil", "1/2 c. chopped onion", "1 1/2 lb. ground beef", "3 1/2 c. canned tomatoes", "1 c. celery, diced", "1/2 c. green pepper, diced", "2 tsp. (or less) salt", "8 oz. pkg. elbow macaroni, cooked, rinsed and drained", "1/8 tsp. black pepper", "1 tsp. Worcestershire sauce", "1/4 tsp. (heaping) chili powder", "1/2 tsp. celery salt", "chopped parsley and grated cheese (optional)"]
["In medium bowl, cut tomatoes into small pieces; add diced celery, pepper and all seasonings.", "Set aside.", "Preheat frypan to 300\u00b0; add vegetable oil and onion; cook until just beginning to brown.", "Add meat.", "Turn dial to 400\u00b0, stirring frequently, until browned.", "Remove excess fat, then add tomato mixture.", "Stir; bring to boil.", "Cover; close vent and reduce heat to medium simmer. Cook for at least 25 minutes.", "Add cooked macaroni.", "Simmer 15 minutes longer, stirring occasionally."]
["vegetable oil", "onion", "ground beef", "tomatoes", "celery", "green pepper", "salt", "elbow macaroni", "black pepper", "Worcestershire sauce", "chili powder", "celery salt", "parsley"]