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October 30, 2025

Roast Pork Tenderloin

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Roast Pork Tenderloin

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Continuing with the series of posts about roasting meat and the benefits of cooking simple ingredients, here's one for pork tenderloin.

The convenience of roasting meat is that you don't have to do much, and the leftovers make fabulous ingredients. All you need is olive oil, salt, and pepper. Those basics blend with the natural flavors of the meat and, when roasted, create something remarkably delicious. Of course, you can add more if you like – garlic, rosemary, thyme, or other spices are all easy additions.

One day, I had a bit of leftover pesto and spread it in the middle of the tenderloin before roasting. It was a hit! Often, you don't need an exact recipe — just a moment to see what's in your kitchen (and a little creativity, or at least a spirit of adventure).

Here's a simple recipe for roasting tenderloin, along with serving ideas. If you'd like to add some pesto too, I've included details in the notes.

Ingredients

Scale

1 pork tenderloin (any size you like)

Olive oil

Salt and freshly ground black pepper

Optional: fresh herbs (thyme, rosemary)

Instructions

Preheat the oven to 350° F.

Rub the outside lightly with olive oil, then season with salt and pepper.

Place the pork in a roasting pan. Roast for about 25 minutes per pound, until the internal temperature reaches 145° F.

Remove from the oven and let rest for 5–10 minutes before slicing.

Roasted pork tenderloin sliced on a serving platter and topped with teh herb rue

Notes for adding pesto

If your tenderloin is already split, open it like a book. If not, use a sharp knife to carefully make a lengthwise cut down the middle, being careful not to cut all the way through.

Spread the pesto inside the cut, then close the tenderloin — optional: secure with kitchen twine or a few toothpicks.

Notes

Leftovers Ideas

  • Tacos
  • Pasta
  • Bruschetta or tartines
  • Sandwiches
  • Serve cold with Dijon or aioli

You can even freeze those leftovers to make an even easier dinner another night. This simple recipe, with just a few minutes of prep, turns into several delicious dishes.

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Pork tacos

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Pork, pasta, and parsley
aioli in a bowl with basil and garlic and lemon nearby
Cold roast pork and aioli are divine! 

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I often cook "au pif," as we say in France, which means cooking without an exact recipe and by "feel" using your intuition.  You’ll find guidelines in many recipes versus exact quantities.  Write to me here if you have any questions about the recipes.

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