Zucchini Quiche with Quinoa Crust

medium zucchini, thinly sliced (about 1 1/2 cups)

small yellow squash, thinly sliced (about 1 cup)

large red bell pepper, diced (about 1 cup)

small red onion, diced (about 1/2 cup)

garlic, minced

egg

Campbell's® Condensed Cream of Mushroom Soup

shredded Parmesan cheese or Asiago cheese or smoked Gouda

cooked quinoa (we thought rainbow quinoa looked the best, but plain works, too)