Go ahead and do your ground beef (brown it, etc) with your canned maters and stuff, refried beans on the side with chips and then grill some Avocado's
Select a mostly ripe Avocado.
Split in half and carefully remove the pit.
Rub both cut sides with a light coating of lemon juice...this prevents it from turning brown.
Spritz or coat the cut side of the Avocado with Olive Oil. Sprinkle with Kosher Salt or your favorite rub.
Make sure to oil your cooking grids, as these have a tendency to stick to the grill. Cook over a medium hot grill, cut side down for approximately 4-5 minutes.
Carefully remove from grill with a spatula, as they will be soft and tongs will damage them.
Serve as is or fill the cavity with salsa. A non-fat veggie style dip would be nice here, too :P