Serve as a side dish, place slices on toast rubbed with garlic, or toss with the optional ingredients and serve with pita or crusty bread for a rustic dip.
Position a rack about 5 inches away from the top of the oven and preheat the broiler. Lightly oil a rimmed baking sheet. Core and cut into slices ½ to ¾ inch thick:
Season with:
Place on the baking sheet. If desired, sprinkle with:
Drizzle with:
Broil until golden on top and heated through, about 5 minutes. Sprinkle or toss with any of the following:
Or, if made without cheese, serve with: