1 medium zucchini, cut into chunks |
1 medium yellow squash, cut into chunks |
1 medium onion, halved then cut into chunks |
1/2 pound button mushrooms, quartered or halved |
2 tablespoons olive oil or vegetable oil |
1 teaspoon poultry seasoning |
1 teaspoon salt |
1 teaspoon freshly ground black pepper |