Transfer to a mixing bowl, and massage the cabbage with the olive oil, sumac, salt and coconut sugar
Transfer to a baking dish, and bake at 425 F with convection on for 15 minutes. Then take out of the oven, give it a stir and bake for 10 more minutes.
Take out of the oven, and transfer to a plate or serving dish.
Grate some fresh Parmigiano on top, then drizzle to taste with the Dijon vinaigrette that you have prepared why the cabbage was baking.
Buon appetito.
Recipe Notes
The leftover Dijon drizzle is perfect for a salad dressing or in a sandwich.