Wash the red lentils and soak it until prep all the other ingredients.
In a medium pan heat oil and add the diced onion and garlic. Sauté them until become golden.
Add the red lentil and 1 cup water. Add the salt, carraway powder, paprika powder and smoked paprika powder, crushed chilli. Bring to a boil, cover it with lid and simmer until lentils are soft, about 20 minutes.
Add walnut and tomato passata. Mix it well.
Add the napa cabbage. Mix it well, cover it and cook it for 10 minutes.
Notes
I like to eat it with itself, but you can serve with cooked rice.