Season the rabbit with salt and pepper. Wrap in baking paper with butter, thyme and garlic, then in aluminum foil and cook in the oven for 2 hours at 180 °C (356 °F) in a pan with a little water.
Clean the carrots, cut them into pieces, and boil in salted water with the cardamom. When the carrots are cooked and can be mashed, drain the water, remove the cardamom, and mash them with the butter.
Before serving, remove from foil and brown 5-10 minutes in a hot oven. Use the flavored butter in the packet to baste the meat while browning.
Divide the carrot puree and rabbit into 2 warm plates and serve. Enjoy!