Start by peeling and carefully chopping the onion to small pieces. If you are letting your kids do this, you may want to watch closely or do this with them. My 12 year old is very good with sharp knives, but I'm less inclined with my 10 year old daughter.
Combine the ingredients together in the mixing bowl being careful not to over work the meat. The less you handle the meat, the better the burger turns out.
Shape the burgers into 6 patties and here's where your kids can have some fun. Let them make their own favorite shapes like stars, hearts, squares.
Grill the burgers for 3 to 4 minutes on each side. If you like them more rare, cook them for less time or if you like them more well done, let them cook longer. Please do not overcook them or they will taste like hockey pucks.
If you are going to add cheese, wait until the last minute of cooking, top with cheese and cover your grill so the cheese melts quickly.
While the burgers are resting, toast the buns on a cooler part of the grill. It takes less than a minute to toast them. Do not let them burn.
Put the burgers on the buns and serve with your favorite toppings. We served ours with fresh farm corn on the cob and tomatoes, basil, and mozzarella.