01 - Preheat the grill to medium-high heat. In a large mixing bowl, combine the corn kernels, quartered mushrooms, sliced red onion, and diced bell pepper.
02 - Drizzle the vegetables with olive oil. Add smoked paprika, garlic powder, salt, and ground black pepper. Toss gently to ensure even coating.
03 - Pour the barbecue sauce over the seasoned vegetables and toss again until well mixed.
04 - Tear 4 large sheets of heavy-duty aluminum foil. Evenly divide the vegetable mixture in the center of each sheet. Fold up the sides and seal to form tight packets.
05 - Place the foil packets on the preheated grill. Cook for 15–20 minutes, turning halfway through, until vegetables are tender.
06 - Carefully open the foil packs and garnish vegetables with freshly chopped parsley before serving.