2 small yellow squash, cut into 1-inch pieces (about 2 1/2 cups) |
1 green bell pepper, cut into 1/4-inch strips |
1/2 onion, cut into 6 wedges and separated |
2 teaspoons extra-virgin olive oil, divided |
cooking spray |
1 cup halved grape tomatoes |
16 pitted kalamata olives, chopped |
1 tablespoon balsamic vinegar |
1 tablespoon chopped fresh basil |
1 1/2 teaspoons chopped fresh oregano |
1/4 teaspoon salt |
1/4 teaspoon freshly ground black pepper |