Preheat grill to 400°F.

Wash and remove any damaged outer leaves from cabbage. Rinse in a colander under cold running water. Shake each wedge dry to remove excess water, then pat them with a clean paper or cotton towel.

Using a sharp knife, cut the cabbage lengthwise in half. Cut side up, drizzle each half with the olive oil, salt and pepper. Grill cut side down for 8 minutes, turning 90 degrees once for nice char marks.

Remove from grill, and turn cut side up on baking tray. Cover with foil and place back in grill to cook for another 20 minutes.

Remove foil, transfer to serving tray and cut each half into 2 pieces lengthwise. Pour the Sweet Chili Sauce over each and serve with sliced limes and cilantro on top.