Keto Pesto Chicken
Published November 10, 2019 • Updated February 25, 2026
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Five ingredients, one bowl, and 20 minutes in the oven. I marinate chicken thighs in pesto and rice vinegar for a keto pesto chicken that comes out juicy every single time.
I started making this when I wanted a weeknight chicken recipe that didn’t taste like I was trying to be healthy. The rice vinegar is what makes this version different. It cuts through pesto’s oiliness and keeps the chicken from tasting one-note. I add a teaspoon of monk fruit to the marinade too, which helps the pesto caramelize at 425°F instead of just sitting there. That caramelization is the whole point. When it hits, your kitchen smells like a real pesto dinner, not a diet version of one.
I’ve been making keto chicken thighs with this marinade for years now, and the thing I keep coming back to is how forgiving it is. Thighs don’t punish you for going a minute or two over. Breasts dry out. Thighs just sit there and stay juicy. That’s why I default to them for anything baked.
The whole recipe is five ingredients. Chicken, pesto, rice vinegar, salt, monk fruit. I toss everything in a bowl or a ziploc bag, let it sit in the fridge (anywhere from 15 minutes if I forgot to start it earlier, up to 24 hours if I’m planning ahead), then bake at 425 for about 18-20 minutes. That’s it. Zero net carbs per serving, which is something most pesto recipes can’t say. A lot of store-bought pestos run 2-3g net carbs per serving, and when you pour a whole jar over chicken, that adds up. Mine stays at zero because the vinegar and monk fruit replace the sugar that sneaks into most jarred pestos.
For sides, I usually go simple. If I want something that soaks up the pan juices, I’ll make a low carb cauliflower rice. If I’m feeling more effort, I’ll pair it with creamy pesto chicken pasta using hearts of palm noodles (different vibe, same pesto energy). On nights when I want a completely different protein, creamy Tuscan chicken or sheet pan teriyaki chicken are in the same rotation at my house.
One reader, Valerie, told me she tried six different versions of this recipe from other sites before landing on mine. Her take: the rice vinegar is the difference. It cuts through the richness and the chicken stays juicy even if you overcook it slightly. That tracks with what I’ve seen in my own kitchen. Another reader, Laura, said when the pesto started caramelizing at 425 her whole kitchen smelled like it used to before keto. That’s exactly the reaction I was going for.
If you’re looking for more easy chicken dinners, keto pesto pizza uses a similar flavor profile on a chicken crust, which is a fun weekend version of the same idea.
How to Make Pesto Chicken
The marinade is the only step that matters here, and even that is flexible. I’ve done as little as 15 minutes when I completely forgot to start dinner, and the chicken still came out good. Not as flavorful as a full overnight soak, but absolutely edible. The vinegar needs at least that long to start breaking down the surface of the chicken and letting the pesto absorb. If you have time, 2-4 hours is the sweet spot I keep coming back to. Overnight works too, but I don’t notice a huge difference past about 4 hours.
Use boneless, skinless thighs. I’ve tested this with breasts and they work, but they cook faster (check at 15 minutes) and dry out if you’re not watching closely. Thighs give you a bigger margin of error, which matters on a busy night when you’re not hovering by the oven. If you only have bone-in thighs, add 8-10 minutes to the bake time and check internal temp.
Bake at 425°F, not lower. That temperature is what gets the pesto to caramelize on the edges of the chicken instead of just steaming. You want those slightly crispy, almost charred bits on top. If your oven runs cool, bump to 435. I use a meat thermometer and pull at 165°F internal, but honestly my thighs are usually done by 18 minutes. The casserole dish matters too. I use an 8×12 so the thighs aren’t crowded. If they overlap, you get steamed chicken instead of baked. For a keto chicken recipe with similar ease, try boursin chicken or keto chicken casserole.
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Ingredients
2 pounds boneless, skinless chicken thighs -
1 (6.25 oz) jar of pesto sauce
-
1/4 cup rice vinegar, sugar free
-
1 teaspoon salt
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1 teaspoon monk fruit
Step by Step Instructions
Step by Step Instructions
Marinate chicken
Place the chicken thighs, pesto, rice vinegar, salt and monk fruit in a large bowl or ziploc bag. Mix or shake until the marinade is combined and chicken is evenly coated. Refrigerate for 2 to 24 hours.
Add to casserole dish
When ready to cook, remove chicken from the refrigerator. Preheat the oven to 425 degrees. Align chicken in a 8 x 12 casserole dish. Pour remaining marinade over the chicken thighs.
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
How long do I really need to marinate the chicken?
I've rushed this with as little as 15 minutes and the chicken still came out fine, just not as deeply flavored. The rice vinegar needs at least that long to start doing its job. My sweet spot is 2-4 hours. I do overnight sometimes, but honestly I can't tell the difference past 4 hours. If you're short on time, even a quick toss and straight into the oven works. You'll still get good pesto flavor, just less of the tangy depth.
Is store-bought pesto sauce keto-friendly?
Most are, but I always check the label. The jars I buy run about 1-2g net carbs per serving, which is fine. Where it gets tricky is the ones with added sugar, fillers, or cheap oils. I look for pesto with a short ingredient list: basil, parmesan, pine nuts, olive oil, garlic. That's it. My whole recipe comes out to 0g net carbs per serving because the vinegar and monk fruit replace the sweetness some brands add. If you find a keto pesto you like, stick with it.
Can I use chicken breasts instead of thighs?
I've made this with breasts and they work, but they're less forgiving. Thighs stay juicy even if you go a minute or two past done. Breasts will dry out. If you use breasts, check the internal temp at 15 minutes instead of 18, and pull them as soon as they hit 165°F. I also pound mine to even thickness so they cook at the same rate. For this recipe, though, I always reach for thighs.
Can I freeze pesto chicken for meal prep?
I freeze the raw chicken in the marinade all the time. Ziploc bag, lay it flat in the freezer, and it's good for about 3 months. When I'm ready, I thaw it overnight in the fridge and bake as usual. The marinade actually penetrates better after freezing because the cell walls break down. I keep 2-3 bags prepped in my freezer at any given time. For another easy meal prep option, try Italian keto chicken and rice.
What vegetables can I add to make this a one-pan meal?
I toss broccoli florets or halved zucchini around the chicken for the last 10 minutes of baking. They pick up the pesto drippings and get slightly charred at 425°F. Asparagus works too but goes in at the 12-minute mark since it cooks faster. I wouldn't add mushrooms here because they release too much moisture and you lose that caramelization. Bell peppers do well if you want some color. Just cut everything roughly the same size so it finishes together.
Can I use red pesto or sun-dried tomato pesto instead of basil?
I've done sun-dried tomato pesto with this exact marinade ratio and it's a completely different dish in the best way. Richer, a little sweeter, pairs better with roasted vegetables. Red pesto works too. The rice vinegar still does its job cutting through the oil regardless of pesto type. I'd skip kale pesto, though. I tried it once and the flavor was too grassy after baking. For a sun-dried tomato version that goes further, my keto chicken alfredo uses a similar creamy base.
Can I make this in an air fryer?
I've tested it at 400°F in the air fryer for 12-14 minutes and it works well, especially for smaller batches (2-3 thighs). The pesto gets even crispier on top than the oven version. Marinate exactly the same way. The only thing I'd change is to pat the thighs dry before putting them in the basket so the air fryer can crisp the surface. I flip mine halfway through. For a full family batch, though, I still prefer the oven since my air fryer only fits 3 thighs without crowding.
This recipe is one of the easiest dinners I make. As long as you remember to marinade the chicken a few hours or even the night before, the rest takes 2 minutes of your time and you let your oven do the rest. But I have even forgotten to marinade the chicken before and just threw everything in a pan. It was STILL delicious! Definitely, give the flavors time to meld together if you have the time though.
Pesto chicken only requires four ingredients and it’s prepared in one dish (if you are using a plastic bag or marinade the chicken in the baking dish), so clean up is easy too! This easy dinner is one I often turn to on week day nights.
The chicken is juicy with a balanced flavor between the pesto and the vinegar.
For keto, the best cuts of chicken are the darker meats like chicken thighs and drumsticks since they have a higher fat content compared to white cuts of chicken meat, like the breast. I prefer chicken thighs to chicken breast since the thighs tend to have more flavor than the breast meat. Remember fat = flavor! However, if chicken breast is all you have, you can use them in this recipe. You’ll want to adjust the cooking time as chicken breast meat tends to be thicker. Chicken breast needs to be cooked to an internal temperature of 165 degrees fahrenheit as well.
Most pesto is keto friendly since it is mostly made up of basil, garlic, parmesan cheese, salt and olive oil. I do recommend looking at the ingredient list and carbohydrate count since some manufacturers like to sneak in sugar in their pesto. My favorite brand of 
Making this for Easter dinner so I need to double it, probably 4 pounds of chicken. Do I need to split it into two dishes or can it all go in one, and does the 18-20 minutes at 425 still hold or does a bigger batch need longer?
I didn't have rice vinegar so I panicked and used apple cider vinegar instead, fully expecting to ruin dinner. These came out so juicy I had to check twice that I hadn't missed the rice vinegar buried somewhere in my cabinet (I hadn't). The pesto gets this slightly caramelized edge right around 18 minutes, and that's the moment to pull them. Doubling the batch this weekend.
Third time making this and I finally let it marinate overnight instead of just a couple hours. The rice vinegar really gets into the chicken thighs that way and they come out so much more tender. Can't go back now.
Overnight changes it completely. I usually do 2-4 hours but the thighs just keep absorbing that vinegar the longer they sit.
My husband has been skeptical of jarred pesto for years, always says it tastes flat on its own. He walked in while this was in the oven and just stood there waiting. No commentary, just went back for more when his plate was empty. The rice vinegar is doing something to balance it that I don't fully understand, but I'm not questioning it.
Second plate from a pesto skeptic is the only review that matters. The vinegar thing is hard to articulate but once you notice it you can't un-notice it.
Made this Sunday for a quick dinner and my husband, who usually picks at chicken thighs and leaves half on the plate, scraped every bit of the pesto sauce from the dish. I think it's the rice vinegar cutting through all that fat that makes it work. Going on the weeknight rotation.
The vinegar is the whole reason it doesn't get heavy. Pesto alone would be a lot. Glad the thighs finally won him over.
Used chicken breasts because that's what I had, threw in a bit more pesto to make up for it. Came out drier than I wanted at 20 minutes, but still tasted great. Thighs next time.
Breasts dry out fast at 425. Check the temp at 15 minutes next time. Thighs stay juicy even if you go a couple minutes over.
Ran out of rice vinegar so I subbed white wine vinegar, and the pesto just sings louder with it, there's this brightness in every bite I did not expect. Already marinating another batch.
White wine vinegar is sharper, so yeah, it would cut through the pesto differently. Gonna try it.
My husband is dairy-free so I'd use a vegan pesto. Does that swap work the same way in the marinade, or does the consistency affect how it coats the chicken?
Same swap works. Vegan pesto is a bit thinner without the parmesan, so it might not cling as well, but the rice vinegar still gets into the chicken the same.
Makes sense it would be thinner without the parmesan. I'll probably just add a bit more pesto to compensate.
I used to make pesto chicken all the time before keto and genuinely thought that flavor was just gone for me. Made this on a cold weeknight when I was low about missing old food, and when the pesto started caramelizing at 425 the whole kitchen smelled like it used to. I just kind of stood there. It tasted like what I remembered. Zero net carbs, 47g protein, already planning to make it again this weekend.
The caramelizing at 425 is the whole point. It doesn't do that at 375, I've tested it. That smell is why I never lowered the temp.
I've tried probably six different keto pesto chicken recipes in the last year and this is the one I'm keeping. The rice vinegar is the difference. It cuts through the richness and the chicken stays super juicy even if you go a minute or two over. Made it twice this week already.
The vinegar does a lot of heavy lifting in that marinade. Thighs are so forgiving, I've gone way past a minute over and they still come out fine. Glad you found your keeper.
Made this last night, easy enough for a weeknight. Does the chicken really need to marinate or can I skip that step if I'm short on time?
You can skip it if you're in a rush. I've done 15 minutes when I forget to start it earlier and it's still good, just not quite as flavorful. The vinegar needs at least that much time to do anything.
Hi Annie!
We love your recipes - especially since we can make them ahead of time and pull them out as needed. It's a lifesaver for our family of 6! Can I make this pesto chicken with bone-in/skin on chicken thighs (they were out of boneless/skinless at the store)? Do I need to adjust the cooking time? Also, can I prep the marinade and put the chicken in the marinade in the freezer? Or would it be better to prep the marinade, store it in the fridge and dump it in the bag the night before/the morning of? Thank you so much!!!
Bone-in skin-on works, just longer in the oven. I'd check at 35 minutes at 425, maybe 40, and use a thermometer to hit 165. For the marinade, freeze the chicken right in it - flat in a Ziploc, thaw overnight in the fridge, bake from there.