The heat of the grill transforms vegetables, intensifying their flavors and drawing out their sweetness. Lemon and thyme add a light, summery note.
Preheat grill to medium. (If you are using a charcoal grill, coals are ready when you can hold your hand 5 inches above grill for just 5 to 6 seconds.) Brush vegetables with oil, and season with salt and pepper. Grill vegetables, turning occasionally, until tender and slightly charred, 2 to 8 minutes (times vary depending on vegetable). Transfer grilled vegetables to a platter; add lemon juice, thyme, salt, and pepper, and toss. Serve warm or at room temperature.
You can add or substitute otherseasonal vegetables to this simple salad as you desire.