1 lb. lean ground beef or ground chuck
1 small onion, finely chopped
1 can (10-3/4 oz.) condensed cream of mushroom soup
1/4 cup milk
1 cup frozen mixed vegetables (carrots, corn, green beans, peas)
1 cup Shredded Cheddar Cheese
1 lb. (1/2 of 32-oz. pkg.) Tater Tots
Heat oven to 375ºF. Brown meat with onions in large skillet; drain. Spoon into 2-qt. casserole sprayed with cooking spray. Mix soup and milk until blended; pour over meat mixture. Top with remaining ingredients. Bake 45 min. or until Tater Tots are golden brown and casserole is heated through.