There are many ways of combining rabbit and mustard, many of them complicated and most involving cream. This one is a bit different, and it’s my favourite as well. It may look fiddly at first sight, but you can cook the vegetables, and even fry the rabbit, well in advance, leaving only the roasting and reheating to do at the last minute.
Caution: it will only work with a nice fat farmed rabbit — if you’ve got a wild one, make something else! Here you can buy packs of ready-jointed rabbit — for two of us, I use a saddle cut into four pieces. If you use a whole rabbit, you will need to leave the legs in the oven a further ten minutes after you have taken the rest out. For 4.
Source: the Roux brothers’ French Country Cooking.