I've never had moose ribs but in a slow cooker, anything tastes good.
Ribs,
tomato sauce (herb and garlic) 750ml
rib spice packet
salt pepper
cook for 6 hours...
Mix ingredients in bowl
put some mixture in bottom of cooker
place a few ribs (thaw first)
more mix
more ribs
more mix
more ribs
mix every few hours..
get some garlic bread and beers..
Im sure it will be good after a hard days work