Put the gnocchi in boiling salted water, let them steep for about 2 minutes and drain. Clean, wash and cut the peppers into pieces. Peel and chop onions.
Heat butter in a pot. Sauté peppers and onions for about 4 minutes. Add stock, bring to the boil. Cook vegetables for about 15 minutes. Cut salami into small cubes. Heat a pan without fat, leave out the salami cubes, add gnocchi and fry for another 3 minutes.
Finely puree the soup with a hand blender. Season to taste with salt and pepper. Add sour cream and stir in. Arrange soup in bowls, add gnocchi and salami cubes to the soup. Garnish with fresh thyme.