Hamburger Potato Pie
["1 lb. ground beef", "1 medium onion", "1 c. cooked peas", "2 c. tomatoes", "1/2 c. catsup", "2 Tbsp. butter", "1/2 tsp. salt", "1/2 tsp. pepper", "5 potatoes, cooked and mashed", "1 egg"]
["Brown the chopped onion in butter.", "Remove onion and brown ground beef with salt and pepper.", "Place ground beef and onions, peas, tomatoes and catsup in a casserole to combine.", "Mash potatoes, beat in 1 egg and spoon potatoes on top of other mixture.", "Brown in 375\u00b0 oven until peaks are golden."]
["ground beef", "onion", "peas", "tomatoes", "catsup", "butter", "salt", "pepper", "potatoes", "egg"]