Chicken ‘n’ Summer Squash Packets

Directions

• Flatten chicken to 1/4-in. thickness; sprinkle with 1/8 teaspoon each salt and pepper. Cut eight 15x12-in. rectangles of heavy-duty foil; place one rectangle on top of another to make four. Divide onion slices among the four rectangles; top with chicken, mustard, zucchini, yellow squash and mushrooms.
• Combine the basil, garlic powder, paprika and remaining salt and pepper; sprinkle over vegetables. Dot with butter. Fold foil around vegetable mixture and seal tightly. Place packets on a baking sheet.
• Bake at 425° for 25-30 minutes or until a thermometer reads 165°. Open foil carefully to allow steam to escape. Sprinkle with Parmesan cheese.