Mix the olive oil, soy sauce, garlic, brown sugar, Dijon mustard, and salt and pepper into a bowl, then add to a Ziploc gallon bag.
Add the pork tenderloin to the bag, close it, and cover it with the marinade. Marinate the pork for 30 minutes, but up to 5 days while refrigerated.
Preheat the air fryer to 400 degrees.
Remove the pork tenderloin from the bag and place it in the air fryer. Cook it for 22 to 25 minutes, flipping halfway through until it hits 145 degrees internally.
Let the air fryer pork tenderloin rest for at least 5 minutes, slice into medallions, and enjoy!
Video
Notes
Marinate the pork tenderloin for at least 30 minutes for great flavor, but I like to let it sit in the fridge overnight or even several days if I can plan ahead.
Trim and remove any silver skin before marinating. This is my trick to making sure the pork cooks evenly and stays tender.
I pat the pork dry before cooking. Removing excess moisture helps it sear and develop a nice crust.
Once the pork tenderloin reaches 145 degrees F, I remove it from the air fryer. I use an instant-read thermometer to make sure it’s cooked perfectly.
I let the meat rest for at least 5 minutes before slicing so the juices don’t run out onto the cutting board.
Cook frozen pork tenderloin at 330 degrees F for 33-38 minutes, flipping it and basting it with the marinade halfway through cooking.
Store leftovers in an airtight container in the fridge for up to 3 days.
Reheat leftovers in a preheated air fryer at 350 degrees F for 3-4 minutes.
This nutrition information is based on the exact products I used in this recipe. Brands and sizes of products could alter exact nutrition and should always be calculated independently.