Spicy maple keto pork belly bites are crispy, sticky cubes I rub in a 6-spice chili blend, air fry for 8 minutes, then toss in sugar-free maple syrup while the fat is still hot. 13 minutes start to finish, 0.4g net carbs.
At a restaurant, these take 2 to 3 hours (slow braised, then seared). My version takes 13 minutes from cutting board to plate because the air fryer does the work of both methods at once. The circulating heat renders the fat, crisps the outside, and keeps the center tender without any babysitting.
The flavor comes in two layers. A dry rub with chili powder, salt, paprika, cayenne, garlic powder, and black pepper goes on before cooking. Then right when the bites come out of the air fryer (while the fat is still hot), I toss them in sugar-free maple syrup. The heat melts the syrup into a sticky glaze that coats every surface. Sweet, spicy, salty, all at 0.4g net carbs per serving.
I originally made these for a game day watch party and they were gone in minutes. They work just as well as a holiday appetizer (I like them alongside keto air fryer wings and keto nachos for a full spread) or a weeknight keto snack when I want something rich without a long cook time. For a bigger table, I add bacon wrapped brussels sprouts and call it dinner.
Why this cut works for low carb
This is one of the fattiest cuts you can buy, which makes it naturally keto-friendly. Each serving delivers 30g of fat with virtually zero carbs before the seasoning. The fat also means the bites stay moist inside the air fryer even at high heat. I’ve tried leaner cuts like chicken breast the same way and they dry out fast without breading or a long marinade.
Where to find fresh pork belly
I buy mine at Costco most of the time. They carry full slabs at a good per-pound price and I can cut them to whatever size I need. Asian grocery stores are another reliable option, and I’ve found it at my regular grocery store more often in the last few years as the cut has gained popularity. It’s usually in the meat case near the ribs or pork shoulder. If you don’t see it, ask the butcher. For online ordering, Snake River Farms delivers direct to your door.
How pork belly is different from bacon
They come from the same cut of the pig. The difference is processing. Bacon has been cured (salt, sugar, nitrates) and smoked. Fresh pork belly is the uncured version, thicker and fattier, which is why it renders so well at high heat. I’ve used thick-cut bacon as a substitute when I couldn’t find the fresh cut. The flavor comes out smokier and the texture slightly leaner, but the spice rub and maple glaze work just as well. For keto purposes, both are solid since neither has significant carbs on its own.
The 6-spice dry rub
I use six pantry staples and each one pulls its weight:
Chili powder provides the warm, smoky base heat
Paprika adds color and a mild sweetness
Cayenne pepper brings the sharper, lingering heat (I use 1/4 tsp but drop to 1/8 for heat-sensitive eaters)
Garlic powder rounds out the savory side
Black pepper adds a sharp bite that complements the cayenne
Salt amplifies everything and helps crisp the surface
I use a similar ratio on other proteins. This same blend works as a base coat on garlic parmesan wings when I want a spicier starting point. If you’re missing one or two of these, the rub still holds up. I’ve made these with just chili powder and salt when my spice drawer was running low, and store-bought chili seasoning works as a shortcut. For a milder version, I skip the cayenne entirely.
The sugar-free maple glaze
The maple coating is what sets this recipe apart. I add it after air frying while the bites are still hot. The residual fat melts the syrup into a thin, sticky glaze. I use sugar-free maple syrup to keep the whole thing at 0.4g net carbs per serving.
Sugar-free maple syrup brands I’ve tested:
ChocZero Maple Syrup (my go-to, thickest consistency, clings to the bites instead of running off)
If you don’t have sugar-free maple syrup on hand, I’ve tried these as alternatives:
Keto BBQ sauce for a smoky, tangy version
Soy sauce with a pinch of sweetener for an Asian-inspired twist
Fish sauce with lime juice for a Thai-style flavor
Butter and hot sauce (like Frank’s RedHot) for a buffalo version
Air fryer method (8 minutes)
I set my air fryer to 400 degrees F and let it preheat for 3 to 5 minutes. The high heat is what renders the fat fast and creates that crispy exterior. I place the seasoned cubes in a single layer with space between each piece. Overcrowding causes them to steam instead of crisp.
Air fry for 8 minutes without opening the basket. I don’t flip them. The circulating heat cooks 1/2 inch cubes evenly from all sides, and if your air fryer has a weaker fan you can shake the basket at the 4-minute mark. If your cubes were cut thicker than 1/2 inch, check at 8 minutes and add 1 to 2 more if the edges aren’t golden yet. Fresh pork is safe at 145 degrees F, and cubes this small are well past that once the fat has rendered and the edges are golden. Toss with the sugar-free maple syrup immediately after pulling them out. The surface fat is hottest right then, which is what bonds the syrup into a low carb glaze. I also tried adding the syrup at the 4-minute mark instead of the end, and the glaze sets into the crust rather than pooling on top. Both methods work, but the post-cook toss gives a wetter, stickier coating that I prefer. These make a great air fryer appetizer alongside keto mozzarella sticks.
Oven method (20-25 minutes)
If you don’t have an air fryer, I’ve done these in the oven plenty of times. I place a wire rack on a rimmed baking sheet lined with foil (saves cleanup). I arrange the seasoned bites in a single layer on the rack. Bake at 400 degrees F for 20 to 25 minutes until the edges are golden and the fat has rendered. The wire rack elevates them so hot air circulates underneath, which gets closer to the air fryer effect. I toss with the maple syrup the same way, right after pulling them from the oven. The oven version renders the fat a little slower, which some people actually prefer. I like to serve the oven batch with keto stuffed mushrooms since they bake at the same temperature.
How to Make Spicy Maple Pork Belly Bites
I preheat my air fryer to 400 degrees F while I cut into 1/2 inch cubes. Uniform size matters here because smaller pieces overcook and larger ones stay chewy in the center.
I mix the six spices (chili powder, salt, paprika, black pepper, cayenne, and garlic powder) in a small bowl, then toss the cubes in the spice blend until every surface is coated. I arrange them in a single layer in the basket with space between each piece so the air can circulate.
Air fry for 8 minutes. The exact time depends on your model and how thick the cubes are cut. I look for golden-brown edges with rendered fat and a tender center. If your pieces are thicker than 1/2 inch, add 1 to 2 minutes.
I transfer the hot bites to a bowl, drizzle with sugar-free maple syrup, and toss immediately. The residual heat melts the syrup into a thin glaze that clings to each piece. I serve right away while the outside is still crispy.
Preheat the air fryer to 400 degrees for about 4 minutes
2
Cut the pork belly
Cut pork belly into 1/2 inch chunks and place in a bowl. You can also use pork belly slices.
3
Season it
Sprinkle in seasonings. Toss to coat every piece.
4
Air fry
Add pork belly to air fryer tray or basket in an even layer. Air fry at 400 degrees for 6-8 minutes. Cook longer if your chunks are larger.
5
Coat with syrup
Pour on sugar-free maple syrup. Mix to evenly coat.
Nutrition
Per serving: 1/8 of recipe
Calories
303
Fat
30.1g
Protein
5.2g
Total carbs
4g
Net carbs
0.4g
Nutrition is an estimate calculated from the ingredients listed. Brands vary, so check labels if you track closely.
Frequently Asked Questions
Are these the same as pork belly burnt ends?
Basically the same idea. Traditional burnt ends are usually brisket point, but the pork belly version has become the more popular one at most BBQ spots. My recipe skips the 3-hour smoke and gets similar results in the air fryer in 8 minutes. The spice rub and maple glaze give you that sweet-heat bark without the smoker. The only real difference is cook time and smoke flavor.
Should I use skin-on or skinless?
I use skinless for this recipe because it absorbs more of the spice rub and the maple glaze clings better to the meat surface. Skin-on works if that's what your butcher has, but the skin gets chewy in only 8 minutes of air frying. If you want crispy skin, you'd need to go longer (15 to 20 minutes) and skip the glaze, which is a different recipe at that point. For these bites, skinless is what I reach for.
How do I store, freeze, and reheat leftovers?
Leftovers keep in an airtight container in the fridge for up to 4 days. To reheat, I toss them back in the air fryer at 375 degrees F for 3 to 4 minutes and the syrup caramelizes all over again. The oven works too, 400 degrees F for 5 to 6 minutes on a wire rack. I avoid the microwave because it makes the texture rubbery. For the freezer, I freeze after the air fry step and before the glaze, since the syrup gets tacky. I cool them completely, spread them on a sheet pan in a single layer, freeze for about an hour, then transfer to a freezer bag. They keep for up to 3 months. Either way I add a fresh drizzle of sugar-free maple syrup after reheating.
Can I cook these from frozen?
Yes, I've done it when I forgot to thaw a batch. I air fry from frozen at 400 degrees F for about 14 to 16 minutes (roughly double the normal time). I check at 12 minutes and go from there. The outside crisps up the same way, it just takes longer for the heat to reach the center. I toss with maple syrup right when they come out, same as fresh.
Making these for a backyard get-together next weekend and I already know they’re gonna be a hit. My air fryer isn’t huge, so I’ll be cooking in batches, about 3 pounds of pork belly total. Do I keep it at 8 minutes per batch at 400, or do the second and third batches go a little faster once the fryer’s already at temp? And the maple syrup, do I coat each batch right when it comes out while the fat’s still hot, or hold all three and toss at the end? Don’t want to lose that caramelized thing you’re describing.
I’d keep all three at 8 minutes, just check the later ones a minute early since the fryer’s already hot. Toss each batch in syrup straight out of the basket while the fat’s still hot.
That sizzle when syrup hits hot fat. That’s the step. Every other glaze I’ve tried either burns or slides right off – this one sticks. Four stars: used 2 tablespoons first and it came out too sweet until I bumped up to four.
Tricia, that sizzle is where it all happens. Counterintuitive on the 2 vs 4, but four tablespoons coats more evenly and the caramelization takes over, the sweetness spreads rather than sitting in pools. I’ve started just doing a heavy pour instead of measuring.
Lauren, I should have thought of this from the start. Half a teaspoon right after the basket comes out, at the same moment you’re tossing in the maple while the fat is still hot, and it gets pulled into the glaze instead of just sitting on the surface. I tested a version last week with chili crisp at that exact same step and noticed the same thing, the window matters. Sesame is going on my next batch. Writing it down.
Third batch. The garlic powder is doing more work than you’d think for a quarter teaspoon. Cut it on batch two to test, blend tasted flat. Back to the original.
Never cooked pork belly before and was fully prepared to mess it up, but 8 minutes in the air fryer and it came out perfectly crisped. The cayenne with the maple glaze is a combination I was not prepared for.
The cook time is genuinely 13 minutes, no babysitting required. My issue was the maple syrup range. Four tablespoons made the coating sticky-sweet and the cayenne completely disappeared behind it. Cut back to 2 tablespoons on my second batch and the spice-to-sweet ratio made much more sense. The spice blend itself is well-calibrated, just start low on the syrup.
My son has been skeptical of anything I call ‘keto’ since the cauliflower pizza incident. Made these Sunday. He ate half the bowl before I even sat down, then came back asking for more, pointing at ‘the sticky part.’ That maple coating over a spice rub, in 13 minutes. Didn’t see that coming.
Ha, the cauliflower pizza incident. That sticky part is just sugar-free maple syrup hitting the rendered fat while it’s still hot out of the air fryer. Caramelizes in about 30 seconds.
Added the maple syrup at the 4-minute mark instead of the end, then gave it 2 more minutes. The glaze sets into the crust rather than pooling on top, and the edges caramelize into something almost candied. Much better than the post-cook toss.
These were great but I’ll cut the cayenne in half next time. I’m not much of a spice person and even the 1/4 teaspoon had me reaching for water. The maple syrup at the end was the best part though, that sweet heat combo was better than I expected from something this quick.
1/8 teaspoon is the sweet spot for heat-sensitive. The chili powder carries the flavor anyway so you won’t lose much. And yeah, that maple finish is why I kept testing it.
Do you know if this is the same thing as pork burnt ends? I had them recently (not keto) at a restaurant. I had them leave the sauce off to make it better. Anyway, that would be amazing to make my own (assuming I can find the meat). The internet said burnt ends are made from belly cut.
Yeah, basically the same thing. Traditional burnt ends are usually brisket point but pork belly burnt ends have blown up and that’s what most places are doing now. Fresh pork belly is usually in the meat case near the ribs or pork shoulder, but if you don’t see it just ask the butcher. Skipping the maple and just doing the spice rub dry works great too.
Yes it is. Sometimes the sugar-free maple syrup can increase blood sugar in some people so maybe dust with sugar-free brown sugar sweetener like Brown Swerve instead.
I am new to Keto and found your website. I watched several videos and really like the recipes. I’m looking for recipes that will work for the whole family, not just me. Time is of the essence when trying to juggle work and family. I don’t want to spend a lot of time preparing two different meals. Do you have a 30 day menu available that includes main courses as well as snacks for each day to follow?
Hi Sheryl! That is something that I plan to create in the future. As a working mom, I get where you are coming from and I’m right there with ya on trying to find easy keto recipes to make that the whole family will enjoy.
