Keto BBQ Chicken Tostada
Published June 24, 2022 • Updated March 7, 2026
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I started making these BBQ chicken tostadas on nights when I had leftover rotisserie chicken sitting in the fridge and zero motivation to cook a real dinner. Ten minutes from fridge to table, and my family thinks I put in effort. That’s the kind of recipe I come back to.
BBQ sauce is one of those flavors I keep reaching for when I want to mix things up on weeknights. I’ve tossed it on pulled pork, used it in place of pizza sauce, stirred it into meatloaf, and now these tostadas have joined the rotation alongside my keto white chicken enchiladas as a go-to dinner. The tangy sweetness of sugar-free BBQ sauce against melted cheddar and crispy tortilla just works.
Here’s what I love about this recipe: you probably already have everything you need. Shredded chicken (rotisserie is what I always reach for), a low carb tortilla, BBQ sauce, cheese, red onion. That’s it. I’ve made these with canned chicken in a pinch and they still came out great. Not my proudest kitchen moment, but I’m being honest.
The key is getting that tortilla crispy. I bake mine at 350 for about 6-8 minutes, but I’ve also thrown them on the grill when we’re already cooking outside. The grill version picks up a little char and smoke that pairs so well with the BBQ flavor. In the air fryer, I go 350 for about 6 minutes, but if yours runs hot, start checking at 4. If you’re looking for more Mexican-inspired dinners, try my sheet pan chicken fajitas or this keto crunchwrap for another weeknight win.
Here’s something I didn’t expect when I first made these: zero sugar BBQ sauce caramelizes differently at 350 than regular sauce. The edges get this sticky, slightly charred coating that concentrates all the flavor into those last bites. A reader named Corinne noticed the exact same thing her first time making these, which made me feel less crazy. It’s one of those details you only discover by actually cooking the recipe yourself.
One thing I’ve learned after making these dozens of times: don’t skip the red onion. I know it seems like a small detail, but that sharp bite against the sweet BBQ sauce and melted cheese is what makes the whole thing come together. Thin slices work best so you get a little crunch in every bite. I also like adding a squeeze of lime and some pickled jalapenos when I want more kick. My husband loads his up with sour cream and avocado, which turns it into a full meal.
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Ingredients
4 low-carb tortillas -
2 cups shredded cooked chicken
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1 cup zero sugar BBQ sauce
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1 cup shredded cheddar cheese
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1/4 cup sliced red onions
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1/4 cup roughly chopped cilantro
Step by Step Instructions
Step by Step Instructions
Prepare BBQ chicken
Add cooked, shredded chicken to a medium bowl. Pour in BBQ sauce and mix until combined.
Assemble
Add 1/2 cup BBQ chicken mixture on top of each tortilla. Sprinkle 1/4 cup shredded cheese to each. Top with red onions.
Oven instructions
Place tostadas on a parchment lined baking tray and bake at 350 degrees for 6-8 minutes.
Air fryer instructions
Place tostada in the basket or tray of an air fryer. Air fry at 350 degrees for 6 minutes.
Grill and griddle instructions
Heat grill to medium high heat. Place tostada directly on the grill or griddle. Close the lid and let cook until cheese is melted (about 3-4 minutes).
Cilantro it
Sprinkle cilantro on top.
Nutrition disclaimer
The nutrition information provided is an estimate and is for informational purposes only. I am a Doctor of Pharmacy (Pharm.D.); however, this content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or other qualified health provider before making any lifestyle changes or beginning a new nutrition program.
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Get My Macros + Recipes →Frequently Asked Questions
What's the difference between a tostada and a taco?
A tostada is flat and open-faced, so you pile everything on top of a crispy tortilla instead of folding it. I actually prefer tostadas to tacos for keto because the flat tortilla gets crispier and you can see all the toppings. Plus nothing falls out the back.
Can I use ground beef or turkey instead of chicken?
I've made these with seasoned ground turkey and it was great. Ground beef works too, but I'd drain the fat well or the tortilla gets greasy. My favorite swap is actually shredded pork from my slow cooker. Just toss it in the BBQ sauce the same way.
How do I keep the tortillas from getting soggy?
I pre-bake my tortillas for about 2-3 minutes before adding toppings. That gives them a head start on crisping. The other thing I do is not go overboard with the BBQ sauce. A thin layer is plenty. Too much liquid on top and you lose the crunch.
What can I substitute for shredded cooked chicken?
Rotisserie chicken is my go-to because it's already done and has good flavor. I've also used salsa chicken shredded up (adds an interesting twist), canned chicken in a pinch, and leftover turkey. Just make sure whatever protein you use pairs well with that tangy BBQ sauce.
Can I use any type of tortillas for this recipe?
I'd stick with low carb tortillas to keep this keto. I've tested Mission Carb Balance, Mr. Tortilla, and Egglife wraps in this recipe. Mission is my top pick because it crisps up the best, but Mr. Tortilla gives you the lowest carb count at 1 g net carb.
Can I freeze assembled or unassembled tostadas?
I've tried both ways. Assembled tostadas don't survive the freezer because the tortilla absorbs moisture and goes completely soft when you thaw it. What I do instead is freeze just the BBQ chicken mixture in portioned containers. It keeps for about 2 months and reheats fast. When I'm ready to eat, I crisp a fresh tortilla and build from there. Takes the same 10 minutes.
How many net carbs per tostada?
It depends on your tortilla and BBQ sauce, because those two ingredients drive most of the carb count. When I use Mr. Tortilla wraps (1 g net carb) and Yo Mama's sauce (1 g net carb per serving), my tostada comes in at the low end. With Mission Carb Balance, it's a few more carbs but I get a crispier result. I always check the labels on the specific brands I'm using because the difference is bigger than you'd think.
Can I turn these into breakfast tostadas?
I started doing this after a reader suggested it, and now it's a weekend staple for me. I fry an egg and put it right on top of the tostada with a few slices of avocado. The runny yolk mixes with the BBQ sauce in a way I didn't expect to work, but it does. I skip the red onion for breakfast and add a sprinkle of everything bagel seasoning instead.
I've made a lot of keto 'tostadas' that go soft and fall apart before they hit the table, but these crisp up fast in the air fryer and actually hold. The zero sugar BBQ sauce does more work than you'd expect. This one's a keeper.
My son has been skeptical of low carb tortillas ever since the great cauliflower pizza incident of 2023 (his words), so I wasn't expecting much when I put these in front of him. He picked one up, folded it completely in half like a street taco, and ate the whole thing without saying a word. That was my review. I used Primal Kitchen BBQ sauce and let the shredded chicken sit in it for about 20 minutes before assembling, and I think that's why the flavor went deeper than just coating the surface. Air fryer at 350 for 6 minutes gave the tortillas real crunch that held up under the saucy chicken. My one note, and the reason this isn't five stars: cilantro goes on after baking, not before. Mine basically disappeared in the oven and I didn't notice until I was already eating. Small thing but it matters. Going into the spring rotation regardless.
I used Primal Kitchen's Golden BBQ sauce because I couldn't find zero sugar at my regular store, and honestly I think it ended up better for it. That apple cider vinegar tang with the shredded chicken was not what I was expecting. I'm still pretty new to keto, so I kept waiting for the low carb tortillas to go limp in the middle. Six minutes at 350 in the air fryer and they stayed crunchy all the way through. One thing I figured out on my second try: let the sauced chicken sit a couple minutes before assembling so the sauce soaks in instead of pooling under the tortillas and making them wet. Going to try this with leftover rotisserie next time.
Two minutes rest on the sauced chicken actually matters. Tortillas stay crunchier too. Rotisserie for this one anyway, already seasoned and half the work done.
There used to be this spot near where I grew up that made BBQ chicken tostadas on Fridays and I stopped going when I cut carbs, figured that was just done. Made these last week with Primal Kitchen BBQ sauce and the crispy low-carb tortilla held up better than the real ones ever did, I'm not even exaggerating. I sat there after the first bite just kind of processing it. Didn't expect a tostada to bring all that back.
That Friday spot is a real thing to lose. Primal Kitchen on a pre-baked tortilla, I get why it brought it back.
Was fully prepared to be underwhelmed by low-carb tortillas as tostadas, but they came out of that 350 oven with an actual crunch and now I'm making this instead of the cauliflower crust I always fell back on.
Tried at least five keto tostada recipes this year and this BBQ chicken version is the first one where the tortilla actually held its crunch instead of turning into a sad limp thing.
The pre-bake is what does it. Just two minutes before any toppings go on. Five recipes in, you earned the crunch.
Made this probably six times now and something clicked on the last batch. Swapped the zero sugar BBQ sauce for Primal Kitchen honey BBQ (still low carb enough for me) and the chicken gets this sticky caramelized thing in the air fryer that I keep coming back to. The tortilla edges go almost cracker-crispy while the center holds everything without cracking when you pick it up. I also started loading on extra red onion and cilantro and letting the assembled tostada sit for just a minute before eating, which sounds small but the flavors settle in a way they don't when it's fresh out. Always double the chicken mixture now because it's gone before the week is out. Spring air fryer weather is back and this one's staying in the weeknight rotation.
Primal Kitchen caramelizes because of that honey base, just enough sugar to char in the air fryer. Zero sugar sauce won't get there. The minute rest tip, I'm stealing that.
My mom made tostadas every Sunday when I was a kid. After going keto I figured that was just something I'd lost. Made these last week with leftover rotisserie chicken, and that first bite, the crispy edge with BBQ sauce underneath, sent me right back to her kitchen. Wasn't prepared for that. Still thinking about it.
Food memory is wild. That crispy edge on the first bite, I get why that hit you. Glad it brought Sunday back.
My daughter has had a tostada fixation since she had them at a restaurant last summer, and she's been skeptical of every version I've tried at home. I made these last week on a cold Tuesday night with some leftover rotisserie chicken and she stopped mid-bite to ask where I ordered them from. That's a first. I didn't even tell her about the low-carb tortillas until she was on her second one.
That 'where did you order this' is literally the goal. Rotisserie chicken holds up better against the BBQ sauce than plain shredded too, the pre-cooked flavor is just different.
Wasn't convinced a low-carb tortilla would actually crisp up enough to hold the BBQ chicken without turning into a soggy mess in the middle. Made these on a cold Tuesday night because I had leftover chicken and needed dinner in 15 minutes. At 7 minutes I pulled one to check and the edges were already snapping. The zero sugar BBQ sauce had caramelized in a way I didn't see coming. These are going into heavy rotation.
That snap at 7 minutes is the tell. Once the edges go, the whole tortilla follows. Zero sugar sauce does something weird at that heat.
Made these on a cold Tuesday night with leftover rotisserie chicken, swapped the cheddar for pepper jack. The heat from the pepper jack actually works really well with the BBQ sauce, better than I expected.
Hadn't thought about pepper jack here but it makes sense. The heat cuts the sweetness in the BBQ sauce. Trying that.
My oven is being repaired so I only have my air fryer right now and I am hoping to make these tonight. Mine runs a little hot, so I wanted to ask if I should start checking early or if the cheese really needs the full time to bubble up properly. So excited to try this recipe!
Air fryers run hotter so start checking around 3-4 minutes. The cheese bubbles up fast at 375, so peek early and pull it when it looks good!
OMG. This is super delicious! A nice to have on hand for “emergencies “. I put off prepping breakfast and didn’t want bacon and eggs again so I made this and voila! Great breakfast alternative!
Breakfast tostadas is genius actually. I do leftovers for lunch but never thought about morning. The protein keeps you full way longer than bacon and eggs.