Preparation Whisk oil, vinegar, garlic, rosemary, orange peel, and crushed red pepper in large bowl. Add radicchio and toss to coat. Marinate 15 minutes. Prepare barbecue (medium heat). Drain marinade into small bowl. Place radicchio on grill; sprinkle with salt and pepper. Grill radicchio until edges are crisp and slightly charred, turning occasionally, about 6 minutes. Transfer radicchio to serving platter. Drizzle with reserved marinade and sprinkle with cheese shavings. Test-kitchen tip:
Preparation Whisk oil, vinegar, garlic, rosemary, orange peel, and crushed red pepper in large bowl. Add radicchio and toss to coat. Marinate 15 minutes. Prepare barbecue (medium heat). Drain marinade into small bowl. Place radicchio on grill; sprinkle with salt and pepper. Grill radicchio until edges are crisp and slightly charred, turning occasionally, about 6 minutes. Transfer radicchio to serving platter. Drizzle with reserved marinade and sprinkle with cheese shavings. Test-kitchen tip: