Brown the hamburger and onion with a touch of salt and pepper.
Place the meat mixture in the bottom of a casserole dish.
Layer the vegetables of your choice over the meat.
Mix the cream soup with a little milk and pour the mixture over the vegetables.
Arrange the tater tots on top.
Bake at 350 degrees for 1 hour.
Cover with foil for the last 20 minutes so the tater tots do not get too overdone.