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I tried this last night for dinner and it was INCREDIBLE! The buttery lemony flavor with the Dan’O’s seasoning was out of this world! Super easy to follow recipe, thank you Donya!
William
The Cast Iron Secret Behind the Juiciest Pork Tenderloin
Roasted pork tenderloin is one of those weeknight heroes that looks like you tried much harder than you did. I’ve made this recipe more times than I can count. It started as a quick Tuesday dinner and turned into the dish my family requests every time there are people coming over.
What I love most is that there’s no marinating. No waiting around. You season, you sear, you roast, and you eat. The cast-iron skillet does the heavy lifting. That initial sear builds a golden, caramelized crust that you simply cannot get any other way. Once it goes into the oven, that butter and lemon zest melt right down into the meat, and y’all, the kitchen smells incredible.
This is not a complicated recipe. It’s a smart one. Enjoy!
Donya’s Best Tips for Roasted Pork Tenderloin
Remove the silverskin before anything else: That thin, shiny membrane running along the tenderloin will turn tough and chewy when it cooks. Slide a sharp knife just under it and peel it away. Your finished pork will be tender all the way through.
Don’t skip the sear: Two to three minutes per side in a hot cast iron skillet builds the golden-brown crust that seals in all that savory flavor. A golden exterior is not just for looks. It adds depth that you’ll taste in every bite.
The butter-herb finish is the whole secret: Dot cold butter, fresh lemon zest, and chopped parsley right on top of the tenderloin before the foil goes on. As the pork roasts, that butter melts into the meat and perfumes the entire dish. It’s the step that takes this from good to something you’ll be asked about.
Trust 145 degrees, not 160: The old standard of 160 left pork dry and overcooked. The USDA updated its guidelines, and 145 degrees is the safe and correct target. At 145, the center is just slightly rosy and perfectly juicy. Use a meat thermometer every time.
Rest the meat for a full 10 minutes: I know it’s tempting to slice right away. Don’t. Resting lets the juices redistribute through the entire tenderloin. Cut too early and those juices run right out onto the cutting board. Ten minutes is non-negotiable.
Ingredients You’ll Need
- Pork tenderloin is a lean, fast-cooking cut that stays tender when handled right. It’s the star of the whole dish.
- Dan-O’s Original Seasoning is an all-purpose blend that adds savory depth and a little herbaceous kick. It’s my go-to for this recipe.
- Paprika gives the crust that deep, russet-red color and a subtle smoky warmth.
- Red chile flakes bring a gentle heat that wakes up the other flavors without overwhelming the pork.
- Black pepper adds sharpness and balances the richness of the butter.
- Kosher salt seasons the meat evenly and helps the crust form during the sear.
- Olive oil is the fat that gets the cast iron screaming hot before the pork goes in.
- Butter is the ingredient that transforms the pan juices into something silky and rich.
- Lemon zest cuts through the butter and brightens the whole dish with a fragrant citrus lift.
- Fresh parsley finishes the pork with color and a clean, herbal note that makes every slice beautiful.
Make It Your Own: Flavor Twists and Easy Swaps
Swap Dan-O’s for Montreal Steak Seasoning if that’s what you have on hand. The coarser grind gives the crust an extra-hearty bite.
Add fresh rosemary and whole garlic cloves to the pan before the foil goes on. The rosemary perfumes the roast beautifully and pairs naturally with pork.
Try a honey mustard glaze finish in the last five minutes of roasting. Pull the foil, brush on a mix of whole-grain mustard and honey, and return to the oven uncovered to caramelize.
Use thyme instead of parsley for a more woodsy, earthy finish. It stands up well to the richness of the butter and works especially well in the fall.
Add a splash of dry white wine to the pan drippings before covering with foil. It lifts the fond from the bottom and adds a bright, slightly acidic note to the pan sauce.
Finish with a pinch of smoked paprika instead of sweet paprika if you want a deeper, more campfire-like crust on the outside.
How To Roast Pork Tenderloin in a Cast Iron Skillet
Start by trimming and seasoning the tenderloin, then sear it in a hot cast iron skillet until a golden crust forms all the way around. Add the butter right in the pan, then slide the whole skillet into the oven. Pull it out when it hits the right temperature, rest it, and slice into something genuinely impressive. For full details, quantities, and cook time, see the recipe card below.
If you are not cooking with cast iron yet, this recipe is a great place to start. My cast iron cooking guide has everything you need to know about getting the most out of this kitchen workhorse.
Come On Over, I’ll Set a Place for You
This tenderloin works just as hard on a busy Tuesday as it does when I’ve got friends coming over on Saturday. Here’s how I build the plate depending on who’s coming to dinner.
For a family weeknight dinner: Cheesy Hashbrown Potato Casserole is pure comfort, golden, bubbling cheese over tender shredded potatoes that everyone scrapes the pan for. Maple Bacon Green Beans bring a sweet, smoky richness that pairs beautifully with the savory pork. Creamy Coleslaw rounds it all out with cool, tangy crunch that balances every bite.
When I’m hosting friends: Scalloped Potatoes feel special enough for company, with creamy layered sauce that soaks up every drop of those pan juices. Southern Pineapple Casserole is the dish my guests always ask about. Cranberry Pecan Slaw adds a beautiful, festive crunch that makes the whole table look like you tried really hard. Spaghetti Salad gets made the day before so I’m not scrambling when people arrive.
More From My Kitchen You’ll Want to Try
Ingredients
- 2 ¾ to 1 pound each pork tenderloins (they will come packaged together)
- 2 tablespoon olive oil
- 2 teaspoons Dan-O's Original Seasoning
- 1 teaspoon Kosher salt
- ½ teaspoon fresh cracked pepper
- ½ teaspoon paprika
- ¼ teaspoon red chili flakes (optional)
- 4 tablespoons butter
- 1 lemon zested
- 2 tablespoons chopped fresh parsley
Instructions
- Heat oven to 400 degrees.
- In a small bowl, mix together Dan-O's seasoning, salt, paprika, and pepper. Coat the pork tenderloin.
- In a separate bowl, mix together the lemon zest and chopped parsley, then set aside.
- Heat a cast-iron skillet over medium-high heat. Drizzle in olive oil and sear the pork tenderloin on all sides. Turn off heat, dot the tenderloin with butter, and sprinkle on lemon zest and parsley. Cover with aluminum foil and place in the oven.
- Roast the pork for 20-25 minutes until the internal temperature reaches about 145. Remove the skillet from the oven and let the meat rest for 10 minutes. Slice the tenderloin and drizzle with pan juices. Sprinkle with additional parsley and serve.
Nutrition
Make-Ahead and Storage Tips
This tenderloin is one of my favorite things to prep ahead for Sunday dinner or when I’m hosting and want to keep the evening low-stress. Here’s how I handle it:
•Season it the night before: Coat the tenderloin in the spice blend, wrap it tightly, and refrigerate overnight. The seasoning penetrates deeper and the crust develops even better during the sear.
•Refrigerate leftovers in an airtight container for up to 4 days. Slice only what you’ll eat right away and store the rest whole to keep the moisture in.
•Reheat gently on a sheet pan covered with foil at 350 degrees for about 10 to 12 minutes. This method keeps the pork from drying out.
•Freeze for up to 3 months. Wrap the whole cooked tenderloin tightly in plastic wrap, then a layer of foil. Thaw overnight in the refrigerator before reheating.
•Make it for a dinner party: Sear the tenderloin earlier in the day, then finish it in the oven right before guests sit down. It comes together in under 25 minutes for the oven portion.
Roasted Pork Tenderloin Questions, Answered
Cook pork tenderloin to an internal temperature of 145 degrees Fahrenheit. That is the USDA-approved safe temperature, and it’s the number you want to hit for juicy, just-barely-rosy pork. Pull the tenderloin when your thermometer reads 145, tent it with foil, and rest it for 10 minutes. It will be perfect.
Yes, and here’s why it matters. That two-to-three minutes per side in a hot cast iron skillet creates a golden, caramelized crust that you can’t get from oven heat alone. The sear locks in flavor and gives the finished pork that restaurant-quality exterior. Don’t skip it.
Absolutely. You can also use a simple blend of garlic powder, onion powder, paprika, salt, and pepper. The key is to season generously on all sides.
Yes. Covering the pan tightly with foil traps steam and keeps the tenderloin moist while it finishes in the oven. Without the foil, the lean meat can dry out before it reaches 145 degrees. Remove the foil only if you want to add a glaze in the final few minutes.
If you tried this Roasted Pork Tenderloin or any other recipe, please leave a star rating and let me know how it went in the comments below. Thanks!
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This was absolutely delicious. Added the garlic cloves when it went in The oven.
I’m so happy to hear that, Carol! Thank you for sharing and the great rating. I’m thrilled you are cooking with me.
~Donya
Love this recipe. Have cooked it twice for family and everyone raves about it. I cooked it exactly as the recipe specifies, and it’s perfect! Love it and thank you for the recipe.
That makes me so happy to hear! I love knowing it’s been such a hit with your family and that it turned out perfectly as written. Thank you so much for the sweet comment and for making it again!
~Donya
This pork tenderloin recipe is delicious! I have cooked it twice lately and the entire family — including 2 little grandchildren — love it!
That makes me so happy to hear! When the whole family loves it — especially the little grandkids — that’s the best compliment. So glad it’s become a favorite in your house. Thank you for sharing!
~Donya
I would lke to try this recipe
I made this pork tenderloin recipe tonight and my husband couldn’t quit raving about it! I baked sweet potatoes and roasted carrots and broccoli to go along with the pork. Definitely on my rotation!
What would you suggest to use instead of the Dan-O’s seasoning? I have the tenderloins, but would have to order the seasoning and I want to roast the tenderloins for tonight.
Hey there Vicki!
Thank you so much for your interest in this recipe, I think you’re really going to love it! If you don’t have time to order Dan-O’s, my recommendation would be to make a small batch of my Homemade Montreal Seasoning, I will put the link below this comment. While Dan-O’s seasoning is preferred for this dish, my Montreal Seasoning has fantastic flavors that are delicious with pork tenderloin, it would also compliment the lemon in this recipe very well. Let me know how everything turns out if you give it a try, I’d love to hear what you think of the recipe, I hope you enjoy!
https://www.asouthernsoul.com/homemade-montreal-steak-seasoning/
~Donya
This sounds so good. I only have a 6 1/2 inch cast iron skillet. Can you suggest an alternative way to prepare it? Thank so much. Linda
Hey there Linda!
Thank you so much for your interest in this recipe, that’s a great question! There are a lot of options for searing the pork tenderloin, I like to use a cast iron, but if you don’t have one big enough to fit a tenderloin, you can sear it in the bottom of a dutch oven or any heavy bottom stainless steel skillet. I hope this helps, let me know how everything turns out, I’d love to hear what you think!
~Donya
I tried this last night for dinner and it was INCREDIBLE! The buttery lemony flavor with the DANo’s seasoning was out of this world! Super easy to follow recipe, thank you Donya!
Hey there William!
Oh my goodness! Thank you so much for your kind words and this phenomenal rating! I am thrilled to hear that you enjoyed this recipe, I completely agree with you that the butter and lemon combo is unbeatable! Thank you so much for your support, if you ever have any questions please feel free to reach out!
~Donya