Chop the onion into small cubes.
Cut the boiled chicken fillet into slices.
Finely chop the prunes.
Grate the carrots on a coarse grater or cut into strips.
Grate the cheese on a fine grater.
Cut the eggs into small cubes or grate on a fine grater.
Heat a frying pan with vegetable oil. Fry the onion and carrot for 4-5 minutes over medium heat. Finally, add salt and pepper to taste.
Assemble the salad: put all the ingredients in a deep bowl, add mayonnaise, salt and pepper to taste. Mix thoroughly. The salad is ready.