Heat the oven to 200 ° C . In fireproof pan becomes heated fat. Add the onion, finely chopped, and 2 pinches of salt. Fry until golden in color. Remove the pan from the heat. Top rank the skinless sausages, which are peeled and cut lengthwise in half. Separately, in a small bowl in the warm broth blurred puree and flour. Pour on the skinless sausages. Season with salt and pepper. The pan was placed in a heated oven. The skinless sausages bake 5-8 minutes. Distributed in dishes such as pour the resulting sauce.