Shitake Mushroom Bake

Olive oil
Shiitake mushrooms, 680g
Fresh Thyme
Onion, 3
Salt
Swiss Chard (or tuscan kale), 6 cups
Chickpeas, 1 can
Tamari
Balsamic Vinegar
Arrowroot powder
Black pepper
Cauliflower, 1.3 kg
Pine nuts or cashew nuts, 75g
Olive oil
Nutritional Yeast flakes
Salt