Cook the pasta in boiling salted water according to the instructions on the packet. Melt margarine in a pan. First sauté the vegetable cubes for 2-3 minutes, then stir in the tomato paste and sauté.
Deglaze with 1/8 litre water, bring to the boil and add the tomatoes. Simmer sauce for 3-4 minutes and thicken with sauce thickener. Season sauce with salt, pepper and paprika. Drain the pasta and serve with the sauce.
Sprinkle with parsley strips and garnish with leaves.