1 large heads of radicchio (about 1 pound total), halved through core end, each half cut into 3 wedges with some core still attached
3 tablespoons olive oil
1 tablespoon chopped fresh thyme
Balsamic vinegar (for drizzling)
Preheat oven to 230°C. Rinse radicchio wedges in cold water; gently shake off excess water (do not dry completely). Place radicchio in large bowl. Drizzle with olive oil and sprinkle with thyme, salt, and pepper; toss to coat.
Arrange radicchio wedges, 1 cut side up, on rimmed baking sheet. Roast until wilted, about 12 minutes. Turn over and roast until tender, about 8 minutes longer.
Arrange radicchio on platter, drizzle with balsamic vinegar, and serve.
Market Tip Radicchio (red-leaf Italian chicory) is available in many varieties. The most widely distributed in this country are the round head variety (di Castelfranco or di Chioggia), traditionally used in salads, and the long, flat, finger-shaped radicchio di Treviso, which is excellent grilled.