Cook the tagliatelle al dente according to the instructions on the packet.
Meanwhile fry the onion with the meat until the meat is lightly browned, then add the garlic, paprika and zucchini and sauté over a medium heat for about 3-4 minutes.
Then add the mushrooms and spinach and steam until the spinach collapses slightly, stirring frequently.
Then deglaze with vegetable stock and season with soy sauce, sugar and the spices. Add the cherry tomatoes and simmer gently for another 3-4 minutes.
Take the pan off the heat and stir in the sour cream.
Arrange the tagliatelle with the meat and vegetable sauce on plates and serve immediately.