Ingredients for Grilled Vegetables 1 red onion, cut into large chunks 1 red bell pepper, cut into large chunks 2 zucchini, sliced 2 purple potatoes, quartered and sliced 8 oz. white mushrooms, sliced 12 oz. brussel sprouts, cut in half 4 garlic cloves, minced 1/2 cup olive oil 2 Tbsp. dried parsley flakes 1 Tbsp. garlic