Easy Crockpot Baby Back Ribs

EASY CROCK POT BABY BACK RIBS2 racks baby back ribs, about 3-4 lbs.1 large yellow onion, sliced6 garlic cloves, sliced½ c. waterBBQ RIB SAUCE:¼ c. catsup½ c. chili sauce½ c. your favorite BBQ sauceRUB INGREDIENTS:1 T. paprika1 T. brown sugar1…