For the spaghetti stew, cut the sausages into bite-sized cubes and sauté in a little oil. Cut the onions into small pieces and sauté. Fill up with broth, break the spaghetti into small pieces, add and simmer.
Stir several times, because be careful it sets very quickly, possibly add more liquid (can also be water). Add tomato paste, depending on taste also some ketchup. Season with salt and pepper (but be careful, the sausages already have spice).
The stew tastes best on the second day, when it is properly cooked. However, when reheating, add some more liquid to the spaghetti stew. If you want it spicier, you can add fresh chili.