Chili Rellenos Casserole
["1 lb. ground beef", "1/4 onion, chopped", "5 eggs, scrambled in 1/4 c. milk", "1 large can whole green chilies", "1/2 lb. grated cheese"]
["Cook ground beef. Add onion, salt and pepper.", "Spread chilies over the bottom of a 9 x 13-inch baking pan.", "Pour egg mixture over meat.", "Bake at 350\u00b0 for 20 to 25 minutes.", "Sprinkle with grated cheese and return to oven until melted."]
["ground beef", "onion", "eggs", "green chilies", "grated cheese"]