Trim sinews and bones from venison, and cut the meat into 2-inch cubes. Roll them in flour. Sauté onions in butter in a large heatproof casserole until soft. Remove from pan and reserve. Dice unsmoked bacon, and sauté in remaining fat until golden. Remove and reserve.
Sauté venison in resulting fat until golden; then return sautéed onions and bacon to casserole; add garlic, bay leaves,