St. Louis Style Ribs Recipe

Trim and prepare ribs

Remove membrane from the bone side of the slab: slide a thin spatula or knife under the membrane at one end, lift, grab with a paper towel, and peel it off. Trim excess fat and square the edges if needed so the slab lays flat.

Apply binder

Pat ribs dry with paper towels. Lightly coat both sides of the ribs with yellow mustard (about 2 tbs) to help the rub adhere; the mustard flavor will mostly cook away.

Make the rub

In a bowl, combine 1 cup packed brown sugar, 1 tbs paprika, 2 tsp kosher salt, 1 tsp black pepper, 1 tsp garlic powder, 1 tsp onion powder, 1 tsp chili powder, and 1 tsp cayenne (optional). Mix thoroughly to break up any sugar clumps.

Season ribs

Generously apply the dry rub to both sides of the slab, pressing it into the meat so it adheres. Use all of the rub to ensure a well-coated crust. Wrap the seasoned ribs in plastic wrap or place them in a covered container and refrigerate for at least 1 hour and up to overnight to let flavors penetrate.

Preheat smoker or grill (low-and-slow)

Prepare your smoker for indirect cooking at a stable temperature of 225°F (107°C). Use hardwoods favored for pork such as apple, hickory, or cherry. If using a charcoal grill, set up for two-zone cooking with coals to one side and the ribs on the opposite side.

Place ribs on smoker

Remove ribs from the refrigerator and let them sit at room temperature while the smoker stabilizes (15–20 minutes). Place the ribs bone-side down on the smoker grates, ensuring they are not directly over the heat source.

Smoke, spritz, and maintain

Smoke the ribs for approximately 3 hours, maintaining 225°F. Every 45–60 minutes starting after the first hour, spritz the ribs lightly with apple juice (use the 1 cup as needed in a spray bottle) to keep the surface moist and encourage bark formation. Add wood as needed to maintain smoke and temperature.

The 3-2-1 (adapted) wrap phase

After about 3 hours of smoking and once a desirable mahogany bark has formed, wrap the ribs tightly in heavy-duty aluminum foil (or butcher paper) with a couple of tablespoons of apple juice inside the foil to create steam. Return the wrapped ribs to the smoker and continue cooking for 2 hours at 225°F. This phase tenderizes the meat.

Unwrap and finish

After the 2-hour wrapped phase, carefully remove ribs from foil and place them back on the smoker bone-side down. Increase heat slightly to 250–275°F if you want to set the sauce and firm the bark. Cook unwrapped for 30–60 minutes more until the ribs are tacky and the internal temperature reaches roughly 195–203°F and the meat shows a 1/4-inch retraction from the bone tips. Use visual cues and a bend test—the slab should bend and the meat should start to crack on the surface.

Prepare finishing sauce

While the ribs are in the final 30 minutes of cooking, combine 1 cup tomato-based BBQ sauce, 2 tbs apple cider vinegar, 2 tbs honey or molasses, 1 tsp Worcestershire sauce, and 1 tsp hot sauce in a small saucepan. Warm over low heat and whisk until smooth and slightly reduced (3–5 minutes). Taste and adjust sweetness or acidity to preference.

Apply sauce and set

Brush a thin, even layer of the warm finishing sauce onto both sides of the ribs. Return ribs to the smoker or indirect grill for 10–15 minutes to set the glaze and develop a tacky finish. Apply a second light coat if desired and heat 5 more minutes. Avoid heavy sauce layers that will burn.

Rest and slice

Remove ribs from heat and let rest for 10 minutes loosely tented with foil. Slice between bones into individual portions or into desired serving pieces and serve with extra sauce on the side.