Saffran Celeriac Gratin

  WHAT YOU WILL NEED:  for 3-4 people Celeriac: 1 medium celeriac, peeled and sliced 400ml nut milk(cashew, almond or any other rich nut/seed milk) 1 tbp olive oil ½ tsp salt 1 tbsp Nutritional yeast A pinch of saffron threads Filling: 1 leek, chopped 2 cups cooked lentils 1-2 tbsp olive oil 1 bay…