Grilled Veggies with Mustard Vinaigrette

Directions

1. In a small bowl, whisk the first 5 ingredients. Gradually whisk in oils until blended.
2. Peel and quarter each sweet onion, leaving root ends intact. Cut zucchini and yellow squash lengthwise into 1/2-in.-thick slices. Lightly spritz onions, zucchini, yellow squash and remaining vegetables with cooking spray, turning to coat all sides.
3. Grill sweet onions, covered, over medium heat 15-20 minutes until tender, turning occasionally. Grill zucchini, squash and peppers, covered, over medium heat 10-15 minutes or until crisp-tender and lightly charred, turning once. Grill green onions, covered, 2-4 minutes or until lightly charred, turning once.
4. Cut vegetables into bite-sized pieces; place in a large bowl. Add 1/2 cup vinaigrette and toss to coat. Serve with remaining vinaigrette.