Crock Pot Spare Ribs

4-5 lbs boneless pork spareribs, cut into pieces (beef works too)
1 med. onion, thinly sliced 1 c ketchup
1/2 to 1 c water 1/4 c packed brown sugar
1/4 cider vinegar 2 T Worcestershire sauce
2 t ground mustard 1-1/2 salt
1 t paprika

Place half of the ribsw in a slow cooker; top with half of the onion. Repeat layers. Comvine the remaining ingreds; pour over all. Cover and cook on low for 89 hours or until ribs are tender. Serves 6-8.