Cut ribs into portion sized sections (about 3 ribs each)
place ribs around sides and bottom of crock, meaty sie toward toward to crock,
Spread apple slices over ribs.
Combine onion, applesauce, brown sugar, vinegar and 1/2 of BBQ sauce in blender.
Pulse until blended.
Pour sauce over ribs.
Cook on high 4 hours, or on low for 8 hours, until ribs are tender.
Remove from slow cooker and brush with remaining BBQ sauce.
To get more crispy ribs, transfer ribs to foil line baking sheet and broil for several minutes.