I guess you could call this Hamburgers My Way as this isn't a recipe as such.
When you are making hamburger patties, add diced vegies to the ground beef before shaping it. You can add all or any of the following:
Onion, of course
Mushrooms (my favorite
)
Minced garlic
Red or green pepper
Finely grated carrot
Zuchinni
Celery
Parsley or any fresh herb
Or ???
Don't add so many vegies that the meat won't hold together. And cut the vegies finely enough so that they will cook. I usually add a little tomato sauce to add extra flavour.
Fry or grill until done. Serve with the usual condiments.
This is a good way to get kids to eat vegies. My kids would eat anything grilled and put in a bun w ketshup. It also makes moist flavourful burgers -- a plus when you are using extra lean meat.