Done this 2 times today on 2 different characters. I did indeed get 20 rabbit skillets on both characters. I did notice that the mission stated that you should only get 3.
I found one just west of the spawn point on the Map, near the water. I guess they either spawn in an area near the spawn point on the map or something. Night last long enough just search the entire valley there and you should find one.
The correct skeleton is the Crumbling Skeleton from Avalia starting area where the Mage Tower is. I killed Shambling for an hour no bone. I went over to the Mage Tower and killed 2 Crumbling and it dropped.
The 2nd spawnpoint got removed with the map update on Feb. 13th. He still can spawn in the tunnel on the northern side of the dragon mountain at 2870/2160
These are a great mob to farm for a squishy, or if you're a pet class barely paying attention. They seem to rely on auto attacks for damage, and they just attack for like 1-2 every 2-3 seconds, a rogue could comfortably tank these