- Nonstick vegetable oil spray
- 1 large red onion, cut into 1/4-inch wedges
- 2 medium zucchini, sliced diagonally
- 2 yellow crookneck squash, sliced diagonally
- 2 tablespoons balsamic vinegar
- 1 tablespoon chopped fresh thyme
- 1 teaspoon olive oil
- Preheat oven to 400°F. Spray large baking sheet with nonstick spray. Toss onion and next 5 ingredients together on prepared baking sheet; spread in single layer. Sprinkle with salt and pepper. Bake vegetables until tender and brown around edges, stirring occasionally, about 35 minutes.