If you are looking for a comforting pork dinner with juicy meat, crispy roasted potatoes, fresh garlic, and a rich herb butter sauce, this Garlic Herb Pork Tenderloin with Butter Sauce & Roasted Potatoes is an excellent recipe to make. The pork is seasoned with rosemary, thyme, garlic, and paprika, seared until golden, then finished in the oven alongside tender potatoes.
This recipe is perfect for weeknight dinners, Sunday meals, holidays, or entertaining because it looks impressive without requiring complicated preparation. The pork tenderloin cooks relatively quickly, while the roasted potatoes provide a hearty side and the buttery pan sauce brings everything together.
One of the best things about this recipe is the balance of flavors. Garlic and herbs add plenty of savory aroma, lemon brightens the butter sauce, and the potatoes soak up the flavorful juices from the pan.
Why You’ll Love This Garlic Herb Pork Tenderloin
This recipe gives you a complete meat-and-potatoes dinner with very little extra work.
Pork tenderloin is naturally tender and cooks quickly, making it a convenient choice when you want something more elegant than an ordinary weeknight meal.
Searing the pork before roasting creates a flavorful golden crust, while finishing it in the oven helps the center cook evenly.
The garlic herb butter sauce is made from the same pan drippings, which means none of that concentrated pork flavor goes to waste.
And because the potatoes roast at the same time, cleanup stays simple.
Ingredients
For the Pork Tenderloin
- 2 pork tenderloins, about 1 to 1¼ pounds each
- 2 tablespoons olive oil
- 1½ teaspoons kosher salt
- 1 teaspoon freshly ground black pepper
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1 teaspoon smoked paprika
- 1 teaspoon dried thyme
- 1 teaspoon dried rosemary
For the Roasted Potatoes
- 1½ pounds baby Yukon Gold or red potatoes
- 2 tablespoons olive oil
- ½ teaspoon kosher salt
- ¼ teaspoon freshly ground black pepper
- 1 teaspoon garlic powder
- ½ teaspoon smoked paprika
- ½ teaspoon dried thyme
For the Garlic Herb Butter Sauce
- 5 tablespoons unsalted butter, divided
- 5 garlic cloves, finely minced
- ½ cup low-sodium chicken broth
- 1 tablespoon Dijon mustard
- 1 tablespoon fresh lemon juice
- 1 teaspoon fresh rosemary, finely chopped
- 1 teaspoon fresh thyme leaves
- 1 tablespoon chopped fresh parsley
- ¼ teaspoon freshly ground black pepper
For Garnishing
- Fresh parsley
- Fresh rosemary or thyme
- Lemon wedges
- Freshly cracked black pepper
How to Make Garlic Herb Pork Tenderloin with Butter Sauce & Roasted Potatoes
1. Preheat the Oven
Preheat your oven to 425°F (220°C).
Lightly grease a large oven-safe skillet, roasting pan, or rimmed baking sheet.
2. Prepare the Potatoes
Wash and dry the baby potatoes.
Cut small potatoes in half and quarter any especially large ones.
Try to keep the pieces relatively similar in size so they cook evenly.
3. Season the Potatoes
Place the potatoes in a large bowl.
Add the olive oil, salt, black pepper, garlic powder, smoked paprika, and thyme.
Toss thoroughly until every piece is coated.
4. Start Roasting the Potatoes
Spread the potatoes in a single layer, placing as many cut sides against the pan as possible.
Roast for approximately 15 minutes while you prepare the pork.
Giving the potatoes a head start helps them become fully tender by the time the pork is finished.
5. Prepare the Pork Tenderloin
Pat the pork dry with paper towels.
Remove any visible silver skin with a sharp knife.
Silver skin stays chewy after cooking, so trimming it improves the texture.
6. Season the Pork
Combine the salt, black pepper, garlic powder, onion powder, smoked paprika, thyme, and rosemary.
Rub the seasoning mixture over every side of the pork tenderloins.
Drizzle lightly with olive oil.
7. Heat a Skillet
Place a large oven-safe skillet over medium-high heat.
Add 1 tablespoon olive oil if needed.
Allow the pan to become hot before adding the pork.
8. Sear the Pork
Add the tenderloins.
Sear for approximately 2–3 minutes per side, turning until several surfaces become golden brown.
The pork does not need to be fully cooked.
9. Add Garlic Butter
Reduce the heat slightly.
Add 2 tablespoons butter to the skillet.
Add half of the minced garlic.
Allow the butter to melt and the garlic to become fragrant for approximately 30 seconds.
Spoon the garlic butter over the pork.
10. Add the Potatoes
Remove the partially roasted potatoes from the oven.
Arrange them around the pork tenderloins in the oven-safe skillet or roasting pan.
If your skillet is too small, keep the potatoes on their separate baking sheet and roast both pans at the same time.
11. Roast the Pork and Potatoes
Transfer the pork to the preheated oven.
Roast for approximately 15–20 minutes, depending on the thickness of the tenderloins.
Turn the potatoes once during this stage if necessary for even browning.
12. Check the Pork Temperature
Insert an instant-read thermometer into the thickest part of the tenderloin.
Whole pork should reach 145°F (63°C) followed by a brief rest.
Remove the pork promptly once it reaches temperature so it stays juicy.
13. Check the Potatoes
Pierce a potato with a knife.
The center should be tender and the outside should be golden.
If the pork is finished before the potatoes, transfer the meat to a cutting board and continue roasting the potatoes for another 5–10 minutes.
14. Rest the Pork
Place the cooked pork on a cutting board.
Tent loosely with foil.
Rest for approximately 5–10 minutes before slicing.
15. Start the Butter Sauce
Place the skillet back over medium-low heat.
Add the remaining 3 tablespoons butter.
Stir in the remaining minced garlic.
Cook for approximately 30–60 seconds until fragrant.
16. Deglaze the Pan
Pour in the chicken broth.
Use a wooden spoon to scrape up the browned bits from the bottom of the pan.
These browned pieces add excellent flavor to the sauce.
17. Add Dijon and Herbs
Stir in the Dijon mustard, lemon juice, rosemary, thyme, and black pepper.
Simmer gently for approximately 2–3 minutes.
18. Finish the Sauce
Reduce the heat to low.
Stir in the parsley.
Taste and adjust with additional lemon, salt, or black pepper if needed.
The sauce should be buttery and flavorful rather than extremely thick.
19. Slice the Pork
Slice the rested pork tenderloin into medallions approximately ½–¾ inch thick.
Cut across the grain for the most tender texture.
20. Arrange and Serve
Arrange the pork medallions on a serving platter.
Place the roasted potatoes around them.
Spoon the warm garlic herb butter sauce over the pork and lightly over the potatoes.
21. Garnish
Finish with fresh parsley, thyme, rosemary, and cracked black pepper.
Serve with lemon wedges if desired.
What to Serve With Garlic Herb Pork Tenderloin
The roasted potatoes already make this a hearty meal, so a simple vegetable is usually all you need.
Green beans, asparagus, broccoli, Brussels sprouts, or roasted carrots all work beautifully.
For something fresh, serve it with a garden salad, Caesar salad, cucumber salad, or arugula salad.
Warm dinner rolls or crusty bread are also excellent for soaking up the garlic butter sauce.
Tips for the Best Garlic Herb Pork Tenderloin
Remove the silver skin before cooking.
Pat the pork dry before seasoning.
Sear the tenderloin before roasting.
Give the potatoes a head start in the oven.
Use an instant-read thermometer.
Remove the pork at 145°F.
Let it rest before slicing.
Do not overcook pork tenderloin because it is a lean cut.
Use fresh garlic in the butter sauce.
Deglaze the skillet so you capture all the browned flavor.
Add the butter sauce just before serving.
Easy Recipe Variations
Garlic Parmesan Pork Tenderloin
Stir ¼ cup freshly grated Parmesan into the butter sauce over very low heat.
Lemon Herb Pork Tenderloin
Increase the fresh lemon juice and zest for a brighter flavor.
Spicy Garlic Pork Tenderloin
Add red pepper flakes or cayenne pepper to the seasoning and sauce.
Honey Garlic Pork Tenderloin
Stir 1–2 tablespoons honey into the butter sauce for a sweet-savory finish.
Dijon Herb Pork Tenderloin
Increase the Dijon mustard to 2 tablespoons.
Pork Tenderloin with Mushrooms
Sauté 8 ounces sliced mushrooms before making the butter sauce.
Pork Tenderloin with Carrots
Add thick carrot pieces with the potatoes.
Creamy Garlic Pork Tenderloin
Add ½ cup heavy cream to the pan sauce after the broth and simmer gently until slightly thickened.
How to Store Leftovers
Allow leftover pork and potatoes to cool before transferring them to airtight containers.
Refrigerate for up to 3–4 days.
Store the butter sauce separately if possible.
To reheat the pork, use gentle heat so it does not become dry.
Place slices in a covered skillet with a small amount of broth or butter and warm over low heat.
Reheat potatoes in a 375°F (190°C) oven or air fryer until hot and crisp again.
The pork can also be frozen for approximately 2–3 months.
Thaw overnight in the refrigerator before reheating gently.
Frequently Asked Questions
Can I use pork loin instead of tenderloin?
Yes, but pork loin is a larger cut and requires a much longer roasting time.
Do not substitute it using the same timing.
What temperature should pork tenderloin reach?
Cook whole pork tenderloin to 145°F (63°C) and allow it to rest briefly before slicing.
Why is my pork dry?
It was probably overcooked.
Pork tenderloin is very lean, so checking with a thermometer is the best way to prevent dryness.
Can I use boneless pork chops?
Yes.
The same garlic herb flavor works beautifully with thick pork chops, but cooking time will be shorter.
What potatoes work best?
Baby Yukon Gold or red potatoes are excellent because they become creamy inside while holding their shape.
Can I make the sauce ahead?
Yes.
Prepare the butter sauce shortly before serving for the freshest garlic flavor, or refrigerate it and reheat gently.
Can I add vegetables to the roasting pan?
Absolutely.
Carrots can roast alongside the potatoes, while broccoli or asparagus should be added later because they cook faster.
Can I cook this in an air fryer?
You can air-fry the pork tenderloin at around 400°F, checking frequently until it reaches 145°F. Roast or air-fry the potatoes separately because their cooking times differ.
Final Thoughts
This Garlic Herb Pork Tenderloin with Butter Sauce & Roasted Potatoes combines juicy pork, golden baby potatoes, fresh garlic, butter, rosemary, thyme, Dijon mustard, and lemon in one satisfying family dinner.
The key is giving the potatoes a head start, searing the pork for extra flavor, and removing the tenderloin once it reaches 145°F so it stays tender and juicy.
Serve everything hot with plenty of garlic herb butter sauce and a fresh vegetable or salad for an easy dinner that feels special enough for guests but simple enough for a weeknight.