Cut the onion into half rings.
Cut the sausages into circles.
Remove seeds from the pepper and cut into thin strips.
Place the onion in a frying pan heated with a little vegetable oil and fry for 3 minutes. Then add the pepper and continue frying, stirring occasionally, for another 3-4 minutes.
Add sliced sausages to the vegetables, salt and pepper to taste, add your favorite spices if necessary, and mix everything well.
Fry the dish until the vegetables are ready for another 5-7 minutes, stirring occasionally. When ready, remove from heat and serve.