Slow Cooker Country-Style Pork Ribs

This is another great dish for those busy nights.  It can be served with a variety of side dishes, veggies or salads.  Enjoy!
-cooking spray
-1 large onion, sliced
-2.5-3 lbs country-style pork ribs
-2 Tbs tomato paste
-1/4 cup molasses
-3 Tbs vinegar
-1 tsp dry mustard
-1/4 tsp salt
-1/4 tsp pepper
-1/2 tsp dried rosemary, crushed
-1 1/2 cups vegetable juice, divided
Generously coat your slow cooker with cooking spray (on the sides too).  Layer the bottom with the onion slices.  Top the onion with the pork ribs.
In a bowl, combine the tomato paste with the molasses, vinegar, mustard, salt, pepper, rosemary and 1/2 cup of the juice.  Mix well and pour over pork.  Cover and cook on low for 6 hours.
In the last few minutes of cooking, pour the remaining 1 cup vegetable juice into a small saucepan.  Bring to a boil.  Lower the heat and let it simmer for 10 minutes.
Remove the meat, without the sauce, from the slow cooker.  Pour the simmered sauce on top and enjoy!