01 - Remove the membrane from the underside of the ribs and slice each rack in half to fit into the slow cooker.
02 - In a mixing bowl, combine honey, soy sauce, minced garlic, apple cider vinegar, smoked paprika, black pepper, and optional red pepper flakes until well blended.
03 - Place ribs into the slow cooker, positioning them to allow even coverage. Pour the prepared honey garlic sauce over the ribs, ensuring each piece is coated.
04 - Cover and cook on low for 6 to 7 hours, or until the ribs are extremely tender and begin to separate from the bone.
05 - For a caramelized finish, carefully transfer the ribs to a foil-lined baking sheet and brush with some of the sauce. Broil in the oven for 5 minutes until the sauce is bubbling and slightly charred.
06 - Garnish the ribs with chopped fresh green onions. Serve hot with remaining sauce.