I've cooked venison ribs several times. I trim them up somewhat but don't worry about all the fat and silver skin. Place them in a crockpot, standing. up. Cover with broth, (beef or chicken) and cook on low pretty much all day like other things you would cook in the crockpot.
After 6-7 hours, gently take the ribs out. gently so you don't also leave the meat in the pot. Place in a pan and cover with BBQ sauce, cover and cook an 250-300 degree oven. Ready to eat.
Cooking in the crockpot cooks the fat and other non-edibles out and leaves all that in the pot with the broth. Have had a lot of compliments cooking this way.
Depending on who's eating the ribs it takes quite a few to feed many as there is not that much meat left on the rib. My experience is that a deer will feed about 4.