These air fryer brussels sprouts come out perfectly crispy on the outside, tender on the inside, and ready in just 20 minutes. A simple toss in balsamic vinegar and avocado oil is all it takes to make a low carb side dish your whole family will put on repeat.

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You guys, I know brussels sprouts have a reputation.
They’ve been the villain of the dinner table for decades, and honestly? That’s grandma’s boiled sprouts doing a lot of damage. (Why, Grandma? Why?)
When you roast them (or better yet, air fry them), something kind of magical happens. The edges get brown and crispy, the inside stays tender, and that slightly bitter edge mellows out into something almost sweet.
Add a splash of balsamic vinegar to these air fryer Brussels sprouts and we’re talking next-level flavor. The balsamic caramelizes in the air fryer and gives every little sprout this tangy, slightly sweet coating that makes them seriously hard to stop eating.
No worries if you don’t have an air fryer yet…check out this keto Brussels sprouts recipe…basically the same thing but done in the oven!
3 Reasons You’ll Love This Recipe
Ready in 20 minutes flat. Trim, toss, air fry. There’s no oven to preheat, no babysitting, and no mess. This is the kind of side dish that makes weeknight dinners feel manageable.
The crispy edges are everything. The air fryer does something an oven just can’t replicate in the same amount of time. Those browned, caramelized outer leaves? They’re the best part, and you get plenty of them.
Even the skeptics come back for seconds. If someone in your house claims to hate brussels sprouts, make these. The balsamic adds just enough sweetness to win people over, and the texture from the air fryer is just delightful.
Ingredients, Swaps, & Tips

Brussels Sprouts – Use fresh. The frozen kind aren’t going to give you the same flavor or texture. Frozen sprouts tend to release a lot of moisture, which works against the crisping process.
Balsamic Vinegar – This does contain sugar, so if you’re keto or just really want to keep the carbs low, skip it! I use a balsamic vinegar that has around 3-4 carbs per tablespoon and it’s getting divided between all the sprouts, so it fits my plan. Be sure to get vinegar and not glaze or you’re really going to be adding a lot of sugar.
Avocado Oil – I love avocado oil because it’s neutral flavored and has a high smoke point. You can swap this for olive oil if that’s what you have.
Add parmesan – This is my favorite way to serve these. Just a couple tablespoons of freshly grated parmesan sprinkled over the hot sprouts right when they come out of the basket. So good.
Try garlic – A little garlic powder in the mix before air frying brings a ton of flavor. Fresh garlic may burn if you go that route.
Step by Step:

Trim the ends off the Brussels sprouts and quarter them.

Toss the Brussels sprouts with the oil, vinegar, and salt.

Air fry the Brussels sprouts at 390 for 10 minutes, shaking the basket halfway through cooking.

Test the Brussels sprouts. They should be tender and crisp. Add more time if needed.
Storage
Fridge: Leftovers keep well in an airtight container for up to 3 days. They won’t be as crispy around the edges the next day, but they’re still delicious.
Reheating: Pop them back in the air fryer at 375 degrees for 3-4 minutes to bring some of that crispiness back. The microwave works in a pinch but they’ll be softer.
Freezer: I wouldn’t recommend freezing these. The texture doesn’t hold up well after thawing.
Make-ahead tip: You can trim and toss the sprouts in the oil and vinegar a few hours ahead of time and keep them in the fridge. Just air fry when you’re ready to eat.
More Easy Low Carb Side Dish Recipes:
- Roasted Turnips: Another air fryer favorite!
- Instant Pot Spaghetti Squash: Spaghetti squash is another low carb veggie that we love!
- Healthy Broccoli Rice Casserole: Like the classic, but somehow even better!
- Cauliflower Mac and Cheese: I hate to brag, but this one really is the best!


Air Fryer Brussels Sprouts
Ingredients
- 1 pound Brussels sprouts
- 1 tablespoon avocado oil
- 1 tablespoon balsamic vinegar
- ½ teaspoon salt
Instructions
- Trim the ends off the sprouts and slice into quarters.
- Add the cut Brussels sprouts to a large bowl with the oil, vinegar, and salt. Toss well to coat.
- Heat air fryer to 390 degrees.
- Add your Brussels sprouts to your air fryer basket and air fry for 10 minutes, shaking once halfway through.
- Test for doneness after 10 minutes. If Brussels sprouts are not as tender as you’d like, continue cooking and checking every 1 minute.












Dana says
I never thought I’d be a fan of Brussels sprouts but here we are! These are so delicious and super easy! I have to thank you, Karly, for all the great keto recipes. My husband and I decided to adopt the keto lifestyle about a year and a half ago and your recipes made all the difference! We lost 100 pounds between the two of us and have kept it off! Thanks so much for your innovative, delicious, and EASY recipes!! We couldn’t have done it, or maintained it, without you!!!
Karly Campbell says
Wow – congratulations!! That’s such an accomplishment for you both. It takes so much willpower to stick to this way of eating for such a long time! I’m so honored to have helped make it a bit easier on you.
Also so happy to hear you like the sprouts! Check out our creamy Brussels sprouts recipe too…it’s another favorite. 🙂
Pam says
Tried broccoli and stir fry in the air fryer using your recipe. It was great. I am planning to use your cheese sauce recipe on it. Keep up the good work.
Shaune Pruitt says
Can you use frozen brussel sprouts?
Karly Campbell says
I’ve only made this with fresh, so I’m really not sure. We always prefer fresh veggies for roasting – the texture is so much better.
irene dela cruz says
thanks karly campbel
i am not a professional cook but your recipe help me a lot…i cook food for my boss hi’s on keto diet ….
thank you very much..have a happy cooking
irene dela cruz