** "Use broth in which rabbit is cooked". The recipe didn't specify, but I assume that the rabbit is to be boiled.
Cook the rabbit until tender, separate meat from the bones and cut into small pieces. Butter a casserole and put a layer of the potato filling in the bottom, then a layer of meat; add 1 Tbsp of sauce (made by combining the flour and water), seasoning, and continue until dish is filled. Bake at 350-F until brown (about 25 minutes).