Easy Air Fryer Steak Fajitas are ready in 20 minutes or less. Use the extra time to make sides and turn this low-carb dinner recipe into a Tex-Mex fiesta!
Preheat empty air fryer with crisper plate or basket in place at 390 °F for 3 minutes.
Pat meat dry. While air fryer is heating up, toss beef cubes with olive oil and fajita seasoning.
Pour seasoned beef cubes, sliced bell peppers, and onions into the preheated air fryer and gently shake to combine. Note: Some of the oil and seasoning will coat the peppers and onions, which is a good thing. If you feel like that does not happen, then spritz with a little more olive oil.
Set air fryer to 390 °F and cook for about 9 minutes in total.After 3 minutes pass, pause and shake the basket. Do this again at 2-minute intervals until the beef cubes reach the desired doneness. The time will vary by machine and based upon the thickness of the cubes and how full the basket is. The best way to determine if the meat is done is to pause and check it. Lift a piece out and test it with a meat thermometer or cut and peek in the middle to see the progress. The USDA recommends that beef be cooked to 145 °F. The internal temperature will continue to rise after the meat is done cooking. For a warm, pink center, remove at 130 °F to 135 °F.
Allow steak to rest a couple of minutes so the juices distribute before slicing against the grain into bite-sized pieces. Squeeze lime juice over the top.
Enjoy on tortillas, lettuce wraps, cauliflower rice, or in a salad with desired toppings.
Low Carb Fajita Seasoning
Mix spices together in a small bowl. The yield is about 1 ½ Tablespoons
Notes
You'll find more expert tips, topping ideas, and step-by-step pictures above!Stovetop Directions - Follow the directions for preparing the beef cubes and vegetables. Heat 1 Tablespoon olive oil in a skillet (preferably cast iron) over high heat and then add beef cubes. Allow beef cubes to cook, untouched on each side for several minutes until they reach the desired doneness. Remove beef and slice after it rests for several minutes. Add vegetables to the pan and cook for 5-7 minutes until charred and softened. Air Fryer Disclaimer - The outcome may vary if you have a different brand or size of air fryer. ALWAYS follow the instructions for your appliance and adjust the cooking process based upon your experience. I try to give lots of tips that will make this recipe successful no matter what type of air fryer is used.Store - Place leftover fajita meat and vegetables in an airtight storage container in the refrigerator for up to 3 days.Reheat - Warm leftovers in a skillet over medium-high heat until hot. You can also reheat this dish in the microwave until warmed through.Freeze - Leftovers may be frozen in an airtight storage container up to 3 months.