In a serving bowl, place the grilled vegetables and veal cubes on cooked rice or quinoa and serve with the tzatziki sauce.
The tzatziki sauce and veal cubes can easily be prepared a day in advance.
If you don't want to bbq, you can prepare the veal fillet like a roast by following the same preparation steps and marinating time. Roast it in a preheated oven at 425˚F for 15 to 20 minutes. Let the meat rest for 10 minutes before slicing and place the veal slices in a serving bowl with the grilled vegetables and rice.