Onions, carrots and zucchini cut into small cubes. In a frying pan with heated oil, fry the onion for 1 minute, add the carrots, fry for 2 minutes, then the zucchini. Fry everything together for about 3 minutes so that the vegetables become ruddy, but not soft. at the end of cooking, add salt, paprika and garlic powder. Set the vegetables aside.