Air Fryer Pork Tenderloin (Juicy, Brown Sugar Garlic Rub, 42g Protein)

Air fryer pork tenderloin is my answer to "I have 30 minutes and nothing planned" — a lean tenderloin rubbed with brown sugar, smoked paprika and garlic, air fried until the outside caramelizes into a sweet, smoky crust and the inside stays juicy and just blushing pink. It is 42 grams of protein a serving, and the air fryer does it better than my oven ever did.

Pork tenderloin has a reputation for being dry, and it is almost always because it was cooked too long. I tested this one with a thermometer every time until I had the timing down: about 20 minutes at 400°F, pulled at 145°F, rested for 5. That is the whole secret. If you usually reach for smothered pork chops or crockpot pulled pork, this is the fast, lean weeknight cousin.

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Why this air fryer pork tenderloin stays juicy.

• A thermometer, not a timer, decides when it is done. Tenderloins vary a lot in thickness, so a fixed cook time is a guess. Pull the pork at 145°F in the thickest part — the USDA-safe temperature — and it rests up to a juicy, faintly pink center. At 160°F it is already dry.
• Brown sugar and smoked paprika build a real crust. The sugar caramelizes in the circulating heat of the air fryer, and the paprika and garlic give it a smoky, savory edge so it never tastes like candy. A thin film of oil first helps the rub stick and brown evenly.
• Forty-two grams of protein, only about 270 calories. Pork tenderloin is one of the leanest cuts at the store, as lean as a chicken breast, and it is usually cheaper. Plug a serving into the protein calculator and see how easily it fills out your day.

Here's what you'll need.

Two small pork tenderloins (about 1¾ pounds total), a little olive oil, light brown sugar, smoked paprika, garlic powder, onion powder, dried thyme, kosher salt and black pepper. That is the whole rub — no marinating time needed. Green beans for alongside if you like.

Here's how it all comes together.

STEP 1 — TRIM THE SILVER SKIN

Pat the tenderloins dry and look for the thin, shiny silver membrane running along one side. Slide the tip of a sharp knife under one end, angle the blade slightly up, and pull the silver skin away in strips. It does not melt as it cooks, so leaving it on makes the pork chewy and curl in the basket.

STEP 2 — MIX THE RUB

In a small bowl, stir together the brown sugar, smoked paprika, garlic powder, onion powder, thyme, salt and pepper, breaking up any lumps of sugar with your fingers. This makes enough to coat two tenderloins generously.

STEP 3 — OIL AND RUB THE PORK

Rub the olive oil all over the tenderloins, then press the spice mix onto every side, using all of it. Tuck the thin tail end under itself if it is very skinny, so the whole tenderloin cooks at the same rate. Heat the air fryer to 400°F while you do this.

STEP 4 — AIR FRY AT 400°F

Lay the tenderloins in the basket with space between them — cut them in half crosswise if they do not fit without bending. Air fry for 10 minutes, flip, then air fry for 8 to 10 more minutes. The crust should be deep mahogany; if the sugar looks close to burning, drop the temperature to 375°F for the last few minutes.

STEP 5 — CHECK FOR 145°F

Insert an instant-read thermometer into the thickest part of each tenderloin. Pull the pork as soon as it reads 145°F. Thinner tenderloins can get there a few minutes early, so start checking at 16 minutes total.

STEP 6 — REST, THEN SLICE

Move the pork to a cutting board and let it rest for 5 minutes — the juices settle back into the meat instead of running all over the board. Slice into ½-inch medallions on a slight angle, spoon any juices from the board over the top, and serve.

If you want more air fryer dinners like this one — real proteins, big flavor, done in about 30 minutes with barely any cleanup — this is the book I cook from on weeknights, the Super Easy Ninja Crispi Air Fryer Cookbook.

Things I learned while testing this recipe.

• Buy tenderloin, not pork loin. They sound alike and sit next to each other at the store, but pork loin is a much bigger, wider roast that needs about twice as long. Tenderloins are long and narrow, usually 1 to 1¼ pounds each, and often sold two to a package.
• A little pink is right. Pork cooked to 145°F with a 3 to 5 minute rest is safe and will have a rosy blush in the very center. That is exactly what you want. If you prefer it fully white, pull it at 150°F, but no higher.
• Watch the sugar in smaller air fryers. Compact baskets with the heating element close to the food brown faster. If yours runs hot, cook at 375°F for the whole time and add 2 to 3 minutes. A little char at the edges is good; black is not.
• Let it rest, even though you are hungry. I sliced one straight out of the basket to test it and lost a puddle of juice onto the board. Five minutes of resting kept the slices noticeably juicier. Use those minutes to finish the sides.

Why pork tenderloin is my favorite fast weeknight protein.

• Thirty minutes from fridge to table. Ten minutes to trim and rub, twenty in the basket, five to rest while you plate the sides. No marinating, no preheating the oven, no searing pan to scrub.
• Lean, high protein, and not expensive. Pork tenderloin is as lean as chicken breast, usually cheaper per pound, and a nice change when you are tired of chicken. Each serving has 42g protein for about 270 calories.
• The leftovers make great lunches. Thin slices of cold pork tenderloin are excellent in wraps, over salads or in grain bowls. I make two tenderloins even when it is just two of us, so I have lunch sorted for days.

Here's what I'd serve with this.

• Air fryer smashed potatoes — crispy garlic parmesan potatoes are the perfect partner here.
• Air fryer Brussels sprouts — cook them in the basket while the pork rests.
• Roasted cauliflower — a low-carb side that goes with the smoky rub.
• Fried cabbage — pork and cabbage is a classic pairing for a reason.
• Mediterranean chickpea salad — a bright, crunchy salad to balance the sweet crust.

Just in case you have leftovers.

Storing: Let the pork cool, then refrigerate sliced or whole in an airtight container for up to 4 days. To freeze, wrap well and freeze for up to 3 months; thaw overnight in the fridge. Store any board juices with the meat to keep it moist.

Reheating: Reheat gently so it does not dry out: in a covered skillet over low heat with a splash of broth or water for 3 to 4 minutes, or in the air fryer at 325°F for 3 to 4 minutes. Cold leftovers are also great sliced thin in wraps and salads without reheating at all.

More easy air fryer recipes...

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If you are building a week of air fryer dinners, my air fryer honey garlic shrimp is just as fast. And one of today's other new recipes is my air fryer turkey meatballs — juicy, golden and 34g protein, ready in 25 minutes.

Fast, high protein air fryer dinners for every night of the week.

The Super Easy Ninja Crispi Air Fryer Cookbook is full of weeknight dinners like this one — pork, chicken, beef and fish with simple rubs and sauces, all tested for timing so they come out juicy every time.

Get the cookbook on Amazon

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