Place all ingredients into a large bowl and toss to coat. Let sit for 30 minutes, stirring often,
Transfer ingredients to a grill basket. If you don't have a grill basket tear off a large sheet of foil and add the mixture to the center of the piece. Fold up and seal tightly.
Place onto grill and cook for 5 minutes or until the vegetables start to soften and get a little char on them. Stir and continue cooking until the vegetables are the desired doneness. I like mine to still have a bit of crunch.