Divide the oyster mushrooms into pieces (fillets) and cut the rest of your vegetables into large pieces (in half or in quarters if they are large).
Put all the ingredients for the marinade in a salad bowl and stir. Add the vegetables, mix well so that the marinade covers all the veggies, and spread them in a baking pan.
Grill on a preheated grill for about 20 minutes, turn them over, and grill for another 10 minutes. We want them slightly cooked but not burnt.
Serving
Serve them plain or accompany them with rice pilaf, quinoa or groat.
If you want, garnish them with chopped parsley or oregano, or drizzle with some olive oil, balsamic vinegar and grape syrup sauce (you can also add mustard).
They are perfect for sandwiches, burgers or veggie wraps.
Notes
You can use any vegetable such as eggplants, potatoes, tomatoes, peppers, or white or brown mushrooms.
The garlic from the marinade can be put in the pan or not, if you want a more discreet aroma.
You can also cook them in barbeque grill or frying pan. In the frying pan, you need to be a little more careful not to burn them because of the marinade.
You can leave the vegetables in the marinade for 10 minutes, but it's not necessary.