Spray a 9x12 pan with cooking spray; place hamburger patties evenly in the bottom, and cover with mixed vegetables. To reduce fat, microcook hamburger patties according to package directions, drain and pat away fat with a dry paper towel.
Prepare gravy as directed on package, if using, or reheat leftover/jarred gravy to get a pouring consistency.
Add Roma tomatoes to gravy. At this point you may add any spices/herbs you like - my family especially likes basil in things, and parsley and pepper are always good.
Pour this to cover the hamburger patties and veggies completely.
Cover with Tater Tot Crowns (Crowns get really nice and crunchy!).
Sprinkle with shredded cheddar, and cover with aluminum foil.
Bake at 350 degrees for 30 minutes.
Remove foil and continue to bake at 400 degrees for 10-15 minutes to get the Taters and cheese crispy.
Serve with a salad if you like, but really, it's pretty much all in here!