Molasses BBQ Ribs

Molasses BBQ Ribs
⏱️ cook time 2 hours 45 minutes
🍽️ servings 4
⚡ Difficulty medium

intro

Fall-off-the-bone pork ribs slathered in rich, smoky molasses BBQ sauce, slow-cooked to sticky, caramelized perfection for classic summer cookout flavor.

Ingredients

St. Louis cut pork spare ribs 1.8kg (2 full racks)
Unsulphured dark molasses 120ml
Apple cider vinegar 80ml
Light brown sugar 60g, packed
Tomato paste 3 tbsp
Yellow mustard 2 tbsp
Smoked paprika 2 tbsp
Garlic powder 1 tbsp
Onion powder 1 tbsp
Kosher salt 1.5 tbsp
Freshly ground black pepper 1 tsp
Worcestershire sauce 1 tbsp
Fresh thyme sprigs 4 sprigs

Steps

1

Remove Rib Membrane

Pat the 2 racks of ribs dry with the edge of the indigo cotton towel, then set them bone-side up on the maple cutting board. Use the tip of the walnut-handled boning knife to lift the thin, papery silver membrane from the back of the rib rack, grip it with a paper towel for traction, and pull it off in one smooth sheet. Discard the membrane; this ensures tender ribs that absorb rub evenly.

Step 1
step1:Remove Rib Membrane
2

Mix Dry Rub

In the medium brushed stainless steel mixing bowl, combine 2 tbsp smoked paprika, 1 tbsp garlic powder, 1 tbsp onion powder, 1 tbsp kosher salt, and 1 tsp black pepper. Stir with the end of the silicone basting brush until the spices are evenly blended, with no clumps of paprika remaining.

Step 2
step2:Mix Dry Rub
3

Coat Ribs with Rub

Sprinkle the dry rub evenly over every surface of both rib racks – front, back, and edges – using your fingers to press the rub firmly into the meat so it adheres. You should not see large patches of raw pork visible through the spice coating. Let the ribs rest at room temperature for 20 minutes while you prep the BBQ sauce.

Step 3
step3:Coat Ribs with Rub
Step 3
step3:Coat Ribs with Rub
4

Simmer BBQ Sauce

Place the small 1.5L stainless steel saucepan over medium-low heat. Add 120ml molasses, 80ml apple cider vinegar, 60g packed brown sugar, 3 tbsp tomato paste, 2 tbsp yellow mustard, 1 tbsp Worcestershire sauce, and 2 thyme sprigs. Stir constantly with the silicone basting brush as the mixture comes to a gentle simmer, then cook for 8 minutes until thick enough to coat the back of a spoon, with small slow bubbles breaking across the surface. Remove from heat and discard the thyme sprigs.

Step 4
step4:Simmer BBQ Sauce
5

Wrap and Slow Cook

Preheat your oven or grill for indirect heat to 150C / 300F. Tear two large sheets of heavy-duty aluminum foil, each long enough to fully enclose a rib rack. Place each rack meat-side up on a foil sheet, seal the foil tightly around the ribs to create an airtight packet, set the packets on the rimmed aluminum baking sheet, and cook for 2 hours. The ribs are ready for this stage when the meat pulls back 1cm from the end of the rib bones when you tug a bone gently.

Step 5
step5:Wrap and Slow Cook
Step 5
step5:Wrap and Slow Cook
6

Baste Ribs Generously

Carefully open the foil packets, watching for escaping hot steam to avoid burns. Use the long stainless steel tongs to transfer the ribs directly back onto the baking sheet, discarding the used foil and collected rib juice. Generously brush every surface of the ribs with the molasses BBQ sauce using the silicone basting brush, applying a thick, even coating. Leave the ribs uncovered for the next cooking stage.

Step 6
step6:Baste Ribs Generously
7

Caramelize Sauce Glaze

Increase the oven or grill temperature to 180C / 350F. Cook the sauced ribs uncovered for 45 minutes, basting with an extra layer of sauce every 15 minutes, until the glaze is sticky, deep mahogany brown, with slightly crispy caramelized edges along the bone tips. The internal temperature of the thickest part of the meat should read 95C / 203F on the instant-read thermometer, indicating perfectly tender, fall-off-the-bone texture.

Step 7
step7:Caramelize Sauce Glaze
Step 7
step7:Caramelize Sauce Glaze
8

Rest and Slice Ribs

Use the tongs to transfer the finished ribs to the large oval terracotta serving platter. Let the ribs rest for 10 minutes to allow the juices to redistribute, then slice between the bones into individual portions using the boning knife. Drizzle with any remaining molasses BBQ sauce, garnish with a fresh thyme sprig, and serve.

Step 8
step8:Rest and Slice Ribs

Tips

1.Always remove the tough papery silver membrane from the bone side of the ribs before adding rub: this chewy connective tissue does not break down during slow cooking, and removing it allows seasoning and sauce to penetrate the meat fully for more tender, evenly flavored results.
2.Cook ribs wrapped in foil at low heat first before applying sauce: molasses has a high sugar content that burns quickly at high temperatures, leading to bitter, charred edges instead of the desired sticky, sweet caramelized glaze.
3.Let cooked ribs rest for a full 10 minutes before slicing: cutting into hot ribs immediately will cause all the flavorful, juicy rendered fat and meat juices to run out onto the platter, leaving the rib meat dry instead of succulent.

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Molasses BBQ Ribs:Frequently Asked Questions

1.Why is St. Louis cut pork spare ribs recommended for this recipe instead of other rib cuts? ▾
St. Louis cut ribs are trimmed into a uniform, rectangular shape by removing excess cartilage and the hard brisket bone, so they cook completely evenly across the whole rack. Their balanced meat-to-fat ratio holds up beautifully to long slow cooking and thick molasses glaze, delivering juicy, consistent bites without falling apart prematurely.
2.Why do you call for unsulphured dark molasses instead of light or sulphured molasses? ▾
Unsulphured dark molasses has a deep, smoky, robust sweetness without the harsh, bitter chemical aftertaste that comes from sulphur preservatives. It’s thicker and more concentrated than light molasses, so it builds that signature sticky, caramelized rib glaze, rather than making the sauce overly thin or cloyingly one-note sweet.
3.Can I make great molasses BBQ ribs if I don’t own a dedicated smoker? ▾
Absolutely! You don’t need specialty equipment for perfect ribs. Cook them low and slow at 275°F on a gas or charcoal grill using indirect heat, adding soaked wood chips in a smoker box for smoky flavor if you’d like. You can also cook them in a standard oven or slow cooker, finishing under the broiler to set the glaze.
4.How do I get fall-off-the-bone ribs without them turning mushy or flavorless? ▾
Skip boiling ribs (that leaches out most of their meaty flavor) and hold a consistent cooking temperature between 225–275°F for 3.5 to 4.5 hours. Wrap ribs in foil with a splash of apple cider vinegar for the final 90 minutes of cook time, then unwrap, sauce, and cook 20 more minutes to set the glaze without over-softening.
5.What role does apple cider vinegar play in this rib recipe? ▾
Apple cider vinegar cuts through the rich sweetness of molasses and brown sugar to balance the BBQ sauce, adding a bright, tangy bite that keeps the glaze from feeling cloyingly heavy. When added to the foil wrap during cooking, it also gently tenderizes the meat and cuts through rendered fat for a cleaner, brighter flavor.
6.Can I prep these ribs ahead of time for a summer cookout? ▾
Definitely! You can trim the ribs, mix up the molasses BBQ sauce, and apply a simple dry rub to the racks up to 24 hours before cooking, storing everything tightly covered in the fridge. This prep-ahead step actually lets salt and spices penetrate the meat for deeper flavor, and cuts down on busy day-of cookout work.
7.Why use tomato paste in the sauce instead of regular ketchup? ▾
Tomato paste has a concentrated, umami-rich tomato flavor without the extra added sugar, preservatives, and excess vinegar found in most store-bought ketchup. It creates a thick, stable sauce base that sticks beautifully to rib surfaces during cooking, rather than running off and burning on the grill the way thinner ketchup-based sauces often do.
8.How do I keep the molasses BBQ sauce from burning while cooking? ▾
Molasses has a high sugar content that burns quickly at high heat, so only apply the thick molasses sauce during the final 15–20 minutes of cooking. Keep your grill or oven temperature steady below 275°F once sauced, and turn ribs frequently to build a glossy, caramelized glaze without charring it into a bitter, blackened crust.
9.Can I substitute baby back ribs for the St. Louis cut spare ribs here? ▾
You absolutely can, just adjust your cook time to account for the cut difference. Baby back ribs are smaller, leaner, and naturally more tender than St. Louis spare ribs, so they’ll cook about 45 minutes to an hour faster. Watch them closely near doneness, as their lower fat content means they can dry out quickly if overcooked.
10.What purpose does light brown sugar serve in the molasses BBQ sauce? ▾
Light brown sugar adds a soft, mellow caramel sweetness that rounds out the sharp, mineral-heavy depth of dark molasses, so the sauce doesn’t taste overly bitter or intensely bold. Its fine granulation also helps the sauce form that perfect sticky, glossy crust when it caramelizes on hot rib surfaces for that iconic finger-licking texture.
11.How do I tell when ribs are done, instead of only relying on cook time? ▾
Use the simple bend test for accuracy: pick up one end of the rib rack with tongs, and if it bends easily and a small crack forms on the top surface where meat pulls away from bone, it’s done. You can also twist a center bone—if it pulls out cleanly with very little resistance, your ribs are ready to rest and serve.
12.Can I make these ribs entirely in a slow cooker if I have no grill access? ▾
Yes! Place trimmed ribs in your slow cooker, pour half the molasses BBQ sauce over them, and cook on LOW for 6 hours until tender. Once done, transfer ribs to a baking sheet, brush with extra sauce, and broil 3–4 minutes per side until the glaze bubbles—this broil step is key to avoiding soggy, crustless ribs.
13.Do I really need to remove the silverskin membrane from the back of the ribs? ▾
Absolutely—always peel that tough, papery silverskin off the bone side of the rack before cooking. It never breaks down during slow cooking, so leaving it on leaves you with a chewy, rubbery bite that blocks seasoning and sauce from penetrating the meat, even if you cook the ribs perfectly to fall-off-the-bone tenderness.
14.How should I store leftover ribs, and how long will they stay good? ▾
Let leftover ribs cool completely, then wrap them tightly in plastic wrap or foil and store in an airtight container in the fridge for up to 4 days. Reheat low and slow, wrapped in foil at 300°F for 15–20 minutes, to keep meat juicy, then brush on a fresh coat of molasses sauce to refresh the glaze before serving.
15.What side dishes pair best with these sticky molasses BBQ ribs for a cookout? ▾
Bright, creamy, or crisp classic summer sides balance the rich, sweet, smoky ribs perfectly: opt for tangy coleslaw, creamy potato salad, smoky baked beans, grilled corn on the cob, or buttery cornbread. These lighter sides cut through the heavy molasses glaze to keep every bite feeling balanced, rather than overly rich or sweet.

Comments (11)

1 week ago

OMG these molasses BBQ ribs are a GAME CHANGER. I made them for my husband’s birthday cookout last weekend and every single guest asked for the recipe! The molasses gives the sauce such a deep, sweet-smoky flavor that’s way better than any store-bought BBQ sauce I’ve ever used. Fall off the bone tender, no joke. 10/10 will make again for our next tailgate.

5 days ago

Wait did you do the dry rub step the night before like the recipe says? I’m making these for our college football tailgate next Saturday and wondering if that prep step is worth it!

3 days ago

So glad these were a hit at the cookout! @TailgateTina doing the dry rub overnight really helps the flavors sink into the meat and tenderizes it even more, but if you’re short on time, 2 hours at room temp works too!

2 days ago

Made these for Sunday family dinner and my picky 7 year old ate THREE ribs, that’s basically a miracle in my house. Only thing is I thought 2 hours 45 minutes would be too long for a weekend meal but most of it is hands off in the oven, so I was able to toss a salad and make cornbread while they cooked. Only note: I added a tiny pinch of cayenne for a little heat, worked perfectly.

1 day ago

Love that your kiddo enjoyed them! Adding a pinch of cayenne is such a great call — that extra little kick pairs so well with the sweet molasses. So glad the hands-off cook time worked for your family dinner routine!

3 days ago

Brought these to our neighborhood block party potluck last week and they were gone in 10 minutes flat. People were hovering by the platter! The molasses glaze gets this perfect sticky crust on the outside that’s just *chef’s kiss*. Will definitely be adding this to my regular potluck rotation.

5 days ago

Okay full transparency, I’ve never made ribs before in my life and I was nervous this would be too hard (the recipe says medium difficulty, which almost made me skip it). But the steps were so clear! Mine didn’t look as pretty as the photo but they tasted incredible. My roommates said they’re better than the ribs at our local BBQ spot. Wild.

4 days ago

Dude same! I’m also a total novice and I made these last month, just make sure you don’t crank the oven temp too high like I almost did — low and slow is key!

2 days ago

So proud of you for giving these a shot as a first-time rib maker! Great tip from @NoviceCookMia — low and slow is definitely the secret to tender ribs, no fancy grill required. Next time they’ll look just as good as they taste, I promise!

2 weeks ago

Has anyone tried making these ahead for meal prep? I’m wondering if they reheat well, since the cook time is a little long for weeknights but I’d love to have them for lunches throughout the week.

1 week ago

I reheated mine in the air fryer at 350 for 5 minutes earlier this week and they were just as good as day 1! The glaze got a little extra crispy, it was chef’s kiss. Just don’t microwave them if you can avoid it, they get soggy.

yesterday

I was worried the molasses would make these too sweet, but the balance of vinegar, paprika, and black pepper in the sauce cuts it perfectly. I smoked these on my pellet grill instead of using the oven for the last 45 minutes and the flavor was out of this world. Will absolutely make again.

30 minutes ago

Good flavor, but I found that my ribs were a little tough when I followed the cook time exactly. I used spare ribs instead of baby back, do you think that’s why?

5 minutes ago

Thanks for the feedback! Spare ribs are a bit larger and fattier than baby back, so they usually need an extra 25-30 minutes of cook time to get that fall-off-the-bone tenderness. Next time, just add a little extra time and check for doneness by twisting a rib bone — if it pulls out easily, they’re ready!

2 hours ago

Made these after a long day hike with my friends this weekend and they hit SO hard. We ate the whole rack in like 15 minutes, no sides needed (okay fine, we had a bag of potato chips, whatever). The molasses flavor is so cozy, perfect for cooler fall evenings.

1 hour ago

Wait this is such a good post-hike meal idea! I’ve been trying to find hearty meals to make for our hiking crew and these would be perfect, easy to wrap up in foil and bring to the trailhead too.

30 minutes ago

Right?! We wrapped them in foil straight out of the oven and they stayed warm for the whole drive up to the trailhead. 10/10 post-adventure food.

5 minutes ago

I could drink this molasses BBQ sauce straight up, no joke. I made a double batch of the sauce to keep in the fridge for wings, burgers, you name it. It’s that good. The ribs were great too obviously, but the sauce is the real star here.

just now

Oh my gosh I did the exact same thing! The sauce is so good on pulled pork too, I stirred a little into my pulled pork sandwiches last night and it elevated them so much.

2 weeks ago

Been making ribs for 40+ years and this molasses recipe is one of the best I’ve tried. Reminds me of the ribs my dad used to make when I was a kid back in Tennessee. Rich, deep flavor, not cloyingly sweet like so many modern BBQ sauces. A real keeper.

2 days ago

I made these a few weeks ago and they were incredible! Quick question for anyone who knows — is this recipe naturally gluten free? I have a celiac friend coming over for a BBQ next weekend and I want to serve these but need to make sure they’re safe for her. All the ingredients I used last time were GF but I wanted to double check I didn’t miss anything!

1 day ago

Great question! As written, the recipe is gluten free — just be sure to double check the label on your Worcestershire sauce, since some brands contain gluten. If you use a GF Worcestershire, these ribs are totally celiac-safe!