Brown ground beef, add peas, corn, and diced onion, then simmer. Add ranch packets, and worchestershire sauce to taste.

Quarter potatoes and bring to a boil. Once they have cooked 7to ten minutes, put in mixing bowl, add milk and butter, and whip till fluffy.

Spray a large baking pan with cooking spray and add meat mixture. Then layer potatoes over the top, the cover with cheese.