Veggies and beef get a little heat and a lot of flavor with less than half an hour on the stove. Top with cheese and let it melt in, then add sour cream for a cool finish.
I don't like using Cheese Whiz in casseroles, so I wouldn't make this until my sister-in-law served it one night. No Cheese Whiz, just real cheddar cheese. Delicious, and kid-friendly.