1Heat oven to 375°F. Spray 2-quart casserole or 11x7-inch glass baking dish with cooking spray. Heat 12-inch nonstick skillet over medium-high heat. Add beef, onion and carrots to skillet; sprinkle with seasoned salt and pepper. Cook 3 to 5 minutes, stirring frequently, until beef is brown.
2Stir in mushrooms and pasta sauce. Heat to boiling. Cook over medium heat 5 minutes, stirring occasionally. Spread in casserole.
3Make potatoes as directed on pouch using water, milk and butter. Spoon into 8 mounds around edge of hot beef mixture. Sprinkle cheese over all.
4Bake uncovered 25 to 30 minutes or until bubbly and potatoes are light golden brown.