01 - In a large mixing bowl, whisk together the balsamic vinegar, olive oil, minced garlic, chopped parsley, thyme, black pepper, and sea salt until well combined.
02 - Add the cleaned mushrooms to the marinade and toss thoroughly to ensure even coating. Cover the bowl and let marinate at room temperature for 20 to 30 minutes, or refrigerate for up to 2 hours for deeper flavor penetration.
03 - Preheat an outdoor grill or grill pan to medium-high heat, approximately 400°F.
04 - Thread the marinated mushrooms onto skewers, packing them snugly while leaving a small gap between each mushroom to allow even cooking.
05 - Place the skewers on the hot grill and cook for 8 to 10 minutes, turning occasionally with tongs, until the mushrooms are tender and lightly charred. Baste with any remaining marinade during grilling for additional flavor.
06 - Remove the skewers from the grill and transfer to a serving platter. Garnish with extra chopped parsley and a light drizzle of balsamic glaze if desired. Serve immediately while hot.