Put the slow-cooker on Low and place the olive oil in then place the garlic and onion in and stir for a few seconds then add the beef cheeks.
Add the tomatoes and sugar. Mix well before you add the parsley, salt and pepper, wine and the beef stock - you can add more stock if you like. If you like you can add the potatoes in the slow cooker or you can steam them with the beans.
Last you add the wine and let cook on low for 6 to 8 hours.
You can serve the meal with a Greek salad or a salad of your choice.