Step 1

Remove the membrane from the back of the ribs by sliding a knife under it and pulling it off. Pat the ribs dry with paper towels. Cut the onions and garlic.

Step 2

Combine the dry rub ingredients in a small bowl. Coat both sides of the ribs with the dry rub, massaging it into the meat for better flavor absorption.

Step 3

Layer the sliced onion and minced garlic at the bottom of a 6-quart slow cooker. Add 1 cup of water to the cooker. Arrange the ribs upright along the sides of the slow cooker, the meaty side facing out. Pour 1 cup of BBQ sauce over the ribs, ensuring they're evenly coated.

Step 4

Cover and cook the ribs on low for 6-8 hours or high for 3-4 hours. The meat should be tender and nearly falling off the bone.

Step 5

Preheat the broiler on high. Carefully transfer the ribs from the slow cooker to a foil-lined baking sheet. Brush the ribs generously with the remaining BBQ sauce.

Step 6

Place the ribs under the broiler for 5-10 minutes, watching closely to avoid burning. Broil until the sauce is bubbling, and caramelized, and the edges are slightly crispy.

Step 7

Remove the ribs from the oven and let them rest for 5-10 minutes to lock in the juices. Cut the ribs into individual portions and serve with extra BBQ sauce on the side.