If you want your cauliflower steaks to brown more, do them right on the pan instead of on parchment or foil.
Store leftovers tightly covered in the fridge, for up to 5 days. To reheat, warm in the oven at 325°F for 5-10 minutes or until heated through, or microwave at high power in 30-second increments.
For a more tender steak, cover the pan tightly with foil during the first five minutes of baking, uncover and continue baking as directed.
Grilling Method: Use a grill pan or grill on the grates. Preheat the grill (and grill pan, if using) at medium heat (about 350°F). Put the oiled side of the cauliflower down first, then brush the top sides with oil mixture. Grill about 8 minutes per side or until tender.