Peel and finely dice the onions and garlic. Drain roasted peppers and dice them coarsely. Cut Cabanossi into slices. Heat the oil in a pot, fry the cabanossi briefly while turning, remove.
Sauté onions and garlic in the frying fat. Add roasted peppers, sauté briefly. Sprinkle with 1 tsp. sugar, stir in tomato paste and sauté briefly. Deglaze with ##tomatoes## including juice and stock, bring to the boil, season with salt, pepper, 1 pinch of sugar and paprika and let simmer covered for about 10 minutes.
In the meantime, clean, wash and finely dice fresh peppers. Crumble feta cheese. Remove the soup from the stove, puree it with a blender, season again with salt, pepper, sugar and paprika.
Add cabanossi and paprika cubes, bring to the boil. Arrange soup, sprinkle with feta.