Balsamic Grilled Vegetables

Bahan-bahan (6 porsi)

• 1 medium green zucchini (sliced into 1/3" thick rings)
• 1 medium yellow squash (sliced into 1/3" thick rings)
• 1/2 lb baby bella mushrooms (halved or quartered if large)
• 8 oz snap peas
• 1/2 large onion (cut into 1/2" wide by 1" long slices.)
• 1/4 cup olive oil
• 3 Tbsp balsamic vinegar
• 1 tsp sea salt (or season to taste)
• 1/2 tsp black pepper (or to taste)