Cooking fondant potatoes is so easy and so delicious. The process is cooking the potatoes in beef or chicken stock and you can do this at home, there are just some simple steps that will turn the humble potato into something absolutely outstanding! The easiest way to cook fondant potatoes is first caramelizing in an oven-proof pan or baking tray deglazing with beef or chicken stock, adding fresh thyme, and place into a 160ºC or 320ºF preheated oven. The potatoes will be infused with the sweet thyme and soak up all that beautiful stock. When just about all the stock has been absorbed the fondant potatoes will be cooked.