Preheat the air fryer to 350°F/180°C for 5 minutes.
Trim the ends from the brussel sprouts, remove any damaged outer leaves, and slice each brussel sprout in half.
Toss the brussel sprouts in olive oil. Place them in the air fryer basket, and cook in the Ninja Foodi on the Air Fry setting at 350°F/180°C for 5 minutes.
Stir, then air fry for an additional 5 minutes, or until the brussel sprouts are slightly browned and tender.
If desired, season with salt and pepper, sprinkle with freshly grated parmesan cheese, and drizzle with balsamic vinegar.
Adding cheese and balsamic vinegar to your sprouts after they're cooked is optional, but a very delicious option!
To add flavor, sprinkle the brussel sprouts with salt, pepper, and/or garlic powder. I suggest adding the parmesan cheese first, and then tasting to see if any salt is necessary, since parmesan is salty.
Pro Tip: This recipe can be made in the air fryer unit with a basket or the air fryer oven. If you are using the air fryer oven, use the middle rack and select the "Air Fry" function.
Pro Tip: Check your food as it cooks. Each air fryer runs a bit differently. Sometimes air frying is a trial and error process. Check your food as it cooks to learn your air fryer better! When cooking a new recipe or food items be sure to check your food often to help avoid over/under cooking.
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Air Fryers can vary greatly. Please take the time to learn your specific air fryer. You may need to adjust times and temperatures based upon your air fryer. All though this website attempts to provide accurate nutritional information, the information should only be considered an estimate. Varying factors such as different product types, different brands, etc. can change nutritional information. It is your responsibility as a consumer to read all labels to make sure the ingredients fit your dietary needs as well as calculate your own nutritional information as a double check.