Preheat oven to 190°C.
Rinse quinoa.
Dice vegetables and cube tofu.
Mix passata, stock, nutritional yeast and seasonings.
Combine quinoa, vegetables and tofu in a large baking dish.
Pour sauce over everything.
Cover tightly with foil.
Bake for approximately 30 minutes.
Check quinoa is tender and liquid absorbed.
Rest for 5 minutes before portioning.