Preheat oven to 375°F.
Brown ground beef with onions until cooked.
Drain thoroughly, then put in bottom of a 2 qt casserole dish.
Mix mushroom soup and milk.
Pour over ground beef.
Sprinkle 2-3 cups of frozen mixed veggies over ground beef/mushroom soup.
Top with ½ cup cheese, Crispy Crowns and the remaining cheese.
Bake (uncovered) for 45-50 minutes or until crowns are crunchy.
