Heat the oil in a medium pan, sauté the mushrooms for 2-3 mins, then stir in the quinoa.
Keeping the vegetable stock warm in a separate pan on a low heat, add a ladle of the stock and stir until absorbed. Stir in the rice and repeat again with the stock, until all the stock has been used up and the rice and quinoa are tender and cooked.
Stir in the thyme leaves. Serve topped with grated parmesan and rocket leaves