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The First Time I Made This, I Had Company Coming

With a filling of sweet apples, toasted walnuts, and red onion, this stuffed pork tenderloin slices into a beautiful spiral that looks like it took all afternoon. It didn’t. Fifteen minutes of prep, one skillet, and dinner is handled.

Let me start by admitting something no cook should probably admit.

I broke the rule. You know the rule. Never test a brand new recipe on company. Make it once for yourself, work out the problems, then serve it to people whose opinion you actually care about.

This was around 2010, back when Facebook was reconnecting everybody with everybody, and I’d found my way back to a couple of old friends from high school. We made plans for dinner at my house. I had a recipe I’d torn out of a magazine years earlier and never gotten around to making. I decided that was the night.

The whole time it was in the oven I was quietly working out what I’d order for delivery if it came out wrong.

It came out great! Better than great, even. When I sliced into those gorgeous spirals of pork wrapped around apples and walnuts, everybody made the noise you want people to make, and I’ve been making it ever since.

I’ve kept it close to the original because the original didn’t need much help. Feel free to make whatever changes you want. I’ve included a few variations below for you to try.

Why This One Earns Its Place

It looks like more work than it is. The spiral does all the heavy lifting. Nobody who sees it sliced on a board assumes it was easy.

One skillet, start to finish. You cook the filling in it, you sear the pork in it, and it goes straight into the oven. Fewer dishes than a weeknight stir fry. Here is a great value skillet that you can use on the stovetop and in the oven.

Pork tenderloin is forgiving on time, not temperature. It’s a lean cut that cooks fast. Twenty to thirty minutes in the oven and you’re resting it.

It scales up without getting harder. You’re already working with a two pack, so a bigger crowd doesn’t mean more work. That’s what makes this a holiday recipe as much as a Tuesday recipe.

What You Need

Pork tenderloin. Not pork loin. They sound alike and they are not the same cut. Tenderloin is the long, narrow, tapered one, usually sold two to a package running about a pound each. That two pack is exactly what this recipe calls for. Pork loin is a wide, thick roast that will not butterfly and roll the way this needs. I get into the difference more over in my Air Fryer Pork Tenderloin post if you want the full breakdown.

Apples. You want something that holds its shape and leans tart. Honeycrisp, Braeburn, or Granny Smith all work. Skip anything soft and mealy or you’ll end up with applesauce in the middle of your pork.

Walnuts. Roughly chopped, not ground. You want to actually find them in there. Toasting them for a few minutes in a dry pan first is optional but it’s a real upgrade for almost no effort.

Red onion. Sweeter and milder than yellow once it cooks down, and it gives the filling that pretty pink color you can see in the slices.

Breadcrumbs. These are the binder. They soak up the apple juices so the filling stays put instead of running out when you slice. Seasoned or unseasoned, the choice is yours.

Fresh rosemary. Fresh genuinely matters here. Dried rosemary goes woody and sharp against the sweet apple, and you’ll be picking bits of it out of your teeth.

How to Butterfly a Pork Tenderloin

This is the only step that sounds intimidating, and it takes about two minutes once you’ve done it.

Lay the tenderloin on a large piece of plastic wrap on your cutting board. Cut lengthwise down the middle, going about two thirds of the way through. You want to leave the bottom third intact so it stays connected. Open it up like a book.

Cover it with a second sheet of plastic wrap and pound it out with the flat side of a meat mallet, or press it with a rolling pin, until it’s an even half inch thick.

Cool Bean Cooking Tip: The plastic wrap is not optional. It keeps the meat from tearing under the mallet and it keeps raw pork from going airborne around your kitchen. Two sheets, top and bottom, every time.

Making It

Prep first. Preheat the oven to 350°F. Drop six to eight toothpicks in a bowl of water to soak. This keeps them from scorching in the oven and it’s the step everybody skips and then regrets.

Cook the filling. Heat a tablespoon of olive oil in a large skillet and add the onion and apples. Cook, stirring now and then, until the onion softens and turns translucent, about three to four minutes.

Finish the filling off heat. Pull the pan off the burner and stir in the walnuts, breadcrumbs, and rosemary. Season generously with salt and pepper. Set it aside to cool slightly.

Butterfly and pound the pork. See the section above. Half inch thickness, even across.

Fill and roll. Spread the apple mixture over the pork, leaving a small border at the edges. Roll it up tight like a jellyroll and secure with your soaked toothpicks. Brush the outside with the remaining olive oil and season all over with salt and pepper.

Sear it. Put that same skillet back on high heat. Add the rolled tenderloin and sear until golden on all sides, about five to six minutes total. Don’t rush this. The color you build here is the color you keep.

Roast. Transfer the skillet to the preheated oven and roast twenty to thirty minutes, depending on thickness, until an instant read thermometer in the thickest part reads 155°F.

Rest. Cover loosely with foil and let it sit at least fifteen minutes. Then pull the toothpicks, slice, and serve.

Cool Bean Cooking Tip: The rest is not a suggestion. Tenderloin is lean, and cutting into it early means the juice ends up on your board instead of in the meat. Fifteen minutes. Set a timer and go pour the wine.

Tips That Actually Change the Outcome

Count your toothpicks going in. Say it out loud, write it on a sticky note, whatever works. You do not want to find one at the table.

Let the filling cool a minute before it goes on the pork. Hot filling on raw meat makes the roll slippery and harder to keep tight.

Roll it tight. A loose roll leaves gaps, and gaps mean the filling falls out when you slice. Snug, like you’re rolling a beach towel.

Use a thermometer. Pork tenderloin goes from perfect to dry in about four minutes. This is the one cut where guessing costs you.

On temperature: the recipe calls for 155°F, which is how I’ve always made it. If you like your pork a little juicier, pull it at 145 to 150°F and let the carryover heat during the rest bring it the rest of the way. Both are safe. 145°F with a three minute rest is the current USDA recommendation for whole cuts of pork.

Swaps and Substitutions

Pears instead of apples. Firm Bosc pears work beautifully and lean a little more elegant.

Pecans instead of walnuts. Sweeter and softer. Good if walnuts are too assertive for your crowd.

Thyme or sage instead of rosemary. Both are naturals with pork and apple. Thyme is the gentlest of the three if rosemary is too piney for you.

Gluten free: swap in gluten free breadcrumbs or use finely crushed pork rinds. The filling needs something to absorb the apple juices, so don’t just leave them out.

Add dried cranberries. A quarter cup stirred into the filling adds tartness and makes it read even more holiday.

Make It Ahead

Filling: make it up to two days ahead and keep it covered in the fridge. Bring it closer to room temperature before you spread it.

Fully assembled: butterfly, fill, roll, and secure up to a day ahead. Keep it wrapped tight in the fridge and pull it out thirty minutes before you sear. This is what makes it work for a dinner party. All the fussy parts are done before anyone arrives.

Leftovers: wrap tightly and refrigerate up to three days. Cold slices are excellent on a sandwich with a little mustard. To reheat, cover with foil and warm at 300°F until just heated through. The microwave will dry it out.

Freezing: freeze cooked, sliced portions up to two months. Thaw overnight in the fridge before reheating.

What to Serve With It

Roasted potato wedges and glazed carrots are what I usually put next to it, and they can share the oven while the pork rests. A cranberry sauce on the side is a natural with the apple in the filling and it dresses the plate up for a holiday table.

This Roasted Artichoke Salad with a homemade vinaigrette also pairs very well.

If you like pork tenderloin but you’re short on time, I’ve got two much faster options: my Air Fryer Pork Tenderloin in an orange honey glaze is on the table in about twenty minutes, and my Air Fryer Pork Chops are even quicker on a weeknight.

Don’t miss my favorite holiday recipes – wouldn’t this pork tenderloin be a perfect holiday meal?!

Frequently Asked Questions

Can I use pork loin instead of pork tenderloin?

Not for this recipe. Pork loin is a much wider, thicker cut and it won’t butterfly and roll the same way. Stick with tenderloin.

How do I know when it’s done?

Put an instant read thermometer in the thickest part of the roll. This recipe finishes at 155°F. Don’t judge by time alone, because thickness varies a lot depending on how tightly you rolled it.

Can I use kitchen twine instead of toothpicks?

Yes, and it’s arguably neater. Tie it at one inch intervals. Toothpicks are just faster and most people already have them on hand.

Why is my filling falling out?

Usually one of two things. Either the roll wasn’t tight enough, or you spread the filling all the way to the edges instead of leaving a border. A little escapes no matter what, and that’s fine.

Do I have to peel the apples?

The recipe calls for peeled, and peeled gives you a smoother filling. Leaving the skin on works, it just adds a bit of chew and some flecks of color.

One Last Thing

If you make this, come back and tell me how it went, especially if you served it to company like I did. There’s a specific kind of satisfaction in pulling off something that looks this good on the first try.