5 ounces soft fresh goat cheese
3 teaspoons grated orange peel
4 tablespoons olive oil
3 tablespoons orange juice
1 onions , sliced into 1/4-inch-thick rounds
diagonal slices sourdough baguette
4 cups fresh arugula leaves, trimmed
3/4 cup Kalamata olives or other brine-cured black olives (about 5 ounces), pitted, halved
Mix cheese and 4 teaspoons peel in small bowl. Season with salt and pepper. (Can be made 1 day ahead. Cover and chill.)
Prepare barbecue (medium-high heat). Whisk 6 tablespoons oil, orange juice and 2 teaspoons orange peel in 13 x 9 x 2-inch glass dish. Season dressing with salt and pepper. Add onions; turn to coat. Using metal spatula, transfer onions to grill and cook until tender and golden, turning occasionally and keeping onions intact, about 10 minutes. Return onions to dressing in dish; turn to coat. Set aside.
Brush remaining 3 tablespoons oil over bread. Grill until bread is golden, about 2 minutes per side. Spread cheese mixture over warm bread.
Add arugula to dressing; toss to coat. Top cheese bread with arugula, onions and olives.