Grilled Vegetable Kebabs 12 mushrooms 2 green bell peppers 1 red bell pepper 1 pint cherry tomatoes 2 onions -- * see note 1 eggplant 3 zucchines 1/2 cup olive oil 1/2 cup lemon juice salt -- to taste black pepper -- to taste 1. Prepare vegetables. Clean mushrooms and remove stems, seed peppers and cut into bite-sized chunks, peel onions and cut into chunks, remove stems from cherry tomatoes, slice zucchini into thick slices, cut eggplant into chunks. 2. Use 6 metal skewers about 6-8 inches long. Thread vegetables onto skewers, alternating according to color for a nice presentation. 3. Brush with a marinade of the olive oil, lemon juice, salt and pepper.Grill 4 inches from hot coals,turning and basting frequently. Cook for about 12-15 minutes.