Gather all ingredients. Preheat grill for medium heat.

Cut cabbage into 8 wedges, and remove the core.

Place cabbage wedges on a piece of aluminum foil large enough to wrap them all. Season wedges on both sides with garlic powder, salt, and pepper; seal the foil.

Cook on the preheated grill until cabbage is tender, about 30 to 40 minutes.

If you want to char the wedges for a smokier flavor, sear the cooked cabbage wedges directly on a greased grill for about 1 minute on each side.