Cut the beef into bite-sized pieces.
Finely chop the onion and garlic.
Heat olive oil in a pan and sauté the onion and garlic.
Add the beef and cook until browned.
Add the rice and sauté together.
Pour in white wine and let it reduce.
Gradually add warm chicken stock, stirring and letting the rice absorb the liquid each time.
Season with salt and pepper.
Add butter and Parmesan cheese and mix well.
Serve in a dish and garnish with parsley.