Ingredients

3 tablespoons olive oil
1 tablespoon balsamic vinegar
1 medium red onion, cut into 1/2-inch-thick rounds
1 bunch asparagus
3 small zucchini, each cut lengthwise into 4 slices
2 large bell peppers, cut into 2-inch-wide strips
1 teaspoon salt
10 cups (1-2 bags) mixed baby greens
4 medium tomatoes, chopped
1/3 cup grated Parmesan cheese
1/4 cup chopped fresh basil
12 large brine-cured kalamata olives, halved (plus 2 tablespoons of brine)
1/2 of a 3.5-ounce package chilled goat cheese, cut horizontally into 6 slices