Easy Grilled Vegetables

Bahan-bahan (4 porsi)

• 1 pound tomatoes, cut into large dice (if using cherry or grape tomatoes, leave whole)
• 1 yellow or white onion, peeled and ends removed, cut into eighths
• 1 medium zucchini, ends removed, sliced in half lengthwise, then cut into 1/2″ pieces
• 1 medium yellow squash, ends removed, sliced in half lengthwise, then cut into 1/2″ pieces
• 1 carton (8 oz.) mushrooms, cleaned and halved
• 1 bulb garlic
• 4 Tbsp . plus 1 tsp. olive oil, divided
• 3 Tbsp . balsamic vinegar
• 1 Tbsp . mixed fresh herbs (such as basil, oregano, parsley, rosemary, and/or thyme), minced (optional)
• black pepper and sea salt, freshly ground