Start by selecting a vibrant assortment of vegetables such as bell peppers, zucchini, cherry tomatoes, and mushrooms. Rinse each vegetable thoroughly under cold water and chop into uniform 1-inch pieces.

In a large mixing bowl, combine olive oil, balsamic vinegar, and minced garlic. Sprinkle in dried oregano, salt, and black pepper. Whisk together until well combined.

Add the prepared vegetable pieces to the bowl with the marinade. Toss gently to ensure each piece is evenly coated. Let sit for about 10 minutes.

Preheat your grill to medium-high heat, aiming for approximately 400°F.

Spread the marinated vegetables evenly across the grill grates and grill for 5-7 minutes on one side.

Use tongs to flip the vegetables and grill for an additional 4-5 minutes until tender and charred.

Remove the vegetables from the grill and let them rest for a few minutes before serving.