Melt butter in microwave on HIGH 20-25 seconds or until melted; add garlic. Brush one side of each slice of bread with butter mixture; set aside.
Slice bell pepper crosswise into 1/2-inch-thick rings. Slice onion crosswise into 1/2-inch-thick slices. Cut eggplant, yellow squash and zucchini lengthwise into 1/2-inch slices.
Heat Grill Pan over medium heat 5 minutes. Lightly spray pan with vegetable oil using Kitchen Spritzer. Place bell pepper and onion into pan. Season with salt and black pepper. Cook 3-4 minutes on each side or until vegetables are crisp-tender. Remove from pan; set aside and keep warm. Spray pan again with vegetable oil. Cook eggplant, yellow squash and zucchini 3-4 minutes on each side or until crisp-tender. Remove from pan; set aside and keep warm.
To assemble sandwiches, arrange four pieces of bread buttered side down; top each with 1 slice cheese, 2 slices each eggplant, yellow squash, zucchini and bell pepper rings, and 1 slice red onion. Top with remaining cheese and remaining bread, buttered side up.
Heat pan over medium heat. Cook sandwiches 1-2 minutes on each side or until cheese is melted and grill marks appear on surface of bread, turning once with Nylon Turner. Serve immediately.
Nutrients per serving:
Calories 490, Total Fat 30 g, Saturated Fat 15 g, Cholesterol 60 mg, Carbohydrate 38 g, Protein 21 g, Sodium 960 mg, Fiber 5 g