This Mustard Pork Loin Roast brings together warm aromatics, a bright trio of mustards, and a beautifully juicy center that feels like Sunday dinner with very little effort. The golden crust turns slightly crisp in the oven while the inside stays tender and sliceable. I have tested this version several times to get the balance just right, and it always delivers a cozy, homemade dinner that feels both rustic and elegant.
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If you are craving something comforting with simple ingredients and big flavor, settle in and let's make this Mustard Pork Loin Roast together.
Why You'll Love This Recipe
- A layered mustard crust that turns golden and fragrant
- Family friendly flavor with a touch of rosemary and warm spices
- Hands off oven time for easy dinners or gatherings
- A budget friendly roast that feeds a crowd
- Excellent leftovers for sandwiches, salads, or grain bowls
Ingredients
For the mustard sauce
- ¼ cup stone ground mustard
- 1 tablespoon Dijon mustard
- 1 tablespoon yellow prepared mustard
- 2 teaspoons minced fresh rosemary
- 1 teaspoon olive oil
- 1 teaspoon honey
- ½ teaspoon sweet curry powder
For the pork loin roast
- 1 boneless pork loin roast, about 3.5 pounds (not pork tenderloin)
- 4 large cloves garlic, minced
- 2 teaspoons kosher salt
- ½ teaspoon freshly ground black pepper
- 2 teaspoons canola oil
- Minced fresh rosemary and parsley, optional garnish
Ingredient Notes and Substitutions
- Pork loin is thicker and more forgiving than pork tenderloin, so look for the larger roast with a fat cap.
- The mustard trio brings depth. Stone ground offers texture, Dijon adds sharpness, and yellow mustard gives brightness.
- Fresh rosemary has a softer, more aromatic flavor than dried. If you substitute dried rosemary, use 1 teaspoon and crush it lightly between your fingers.
- Sweet curry powder is mild and warming. Smoked paprika can be used for a deeper roasted flavor.
- A high heat neutral oil works best for searing, so keep the olive oil in the sauce where its flavor shines.
Instructions
1. Make the mustard sauce
In a small bowl, whisk together the stone ground mustard, Dijon mustard, yellow mustard, rosemary, olive oil, honey, and sweet curry powder until smooth. Set aside.
2. Prep and tie the pork loin
Pat the pork dry on all sides with paper towels so it browns beautifully. Using kitchen string, tie the roast every 2 inches so it keeps a nice even shape in the oven.
3. Make the garlic and salt paste
Sprinkle the salt over the minced garlic on a cutting board. Lay the side of a large knife almost flat and press and scrape the garlic and salt together until a smooth paste forms. Add the pepper and scrape again to combine.
4. Season the pork
Rub the garlic paste all over the pork loin, pressing it gently so it clings. Let the pork rest at room temperature for a short moment while the oven heats.
5. Preheat and sear
Heat the oven to 350 F.
Set a 12 inch cast iron or stainless steel skillet over medium high heat. Add the canola oil and heat until shimmering. Place the pork loin in the skillet, fat side down, and sear for 4 to 5 minutes per side until each surface is deep golden brown.
6. Transfer and coat with mustard
Set a rack inside a roasting pan. Place the seared pork loin on the rack with the fat cap up. Brush the mustard sauce generously over the top and sides.
7. Tent and roast
Loosely tent a piece of foil over the pork without letting it touch the crust. Roast for 35 minutes.
8. Finish roasting
Remove the foil and continue roasting for 15 to 20 minutes more, or until an instant read thermometer in the thickest part reads 145 F.
9. Rest and slice
Let the roast rest about 10 minutes so the juices settle. Cut away the kitchen string and slice the roast into ½ inch slices. Garnish with rosemary and parsley if you like.
Pro Tips for Success
Top Tip
- Blotting the pork dry before searing helps the surface turn golden rather than steaming in the pan.
- If the roast sticks when you try to turn it, give it another minute. Browning happens when the meat releases naturally.
- Pulling the roast at 145 F gives naturally tender slices.
- Resting the pork after cooking helps every slice stay juicy.
- Look for the grain running through the roast and cut across it for the softest bite.
Storage and Reheating
- Refrigerate leftover slices in an airtight container for up to 3 days.
- Freeze tightly wrapped portions for up to 2 months.
- Reheat gently in a covered baking dish with a splash of broth at 300 F for 10 to 15 minutes.
Make Ahead and Freezing
- Tie and season the roast up to one day ahead. Let it sit at room temperature for about 30 minutes before searing.
- Make the mustard sauce the day before and refrigerate it. Stir before using.
- Freeze cooked slices once cooled and reheat as needed for quick meals.
Tips and Variations
- Use thyme or a mix of rosemary and thyme for an herbal twist.
- Add a pinch of cayenne to the garlic paste for a little heat.
- Increase the honey to 2 teaspoons for a sweeter, more caramelized crust.
- Roast baby potatoes and carrots in the same pan for an easy one pan meal.
- Keep a bit of the fat cap intact for moisture during roasting.
FAQs
Pork tenderloin is much smaller and leaner, so the timing and temperature would be very different. This recipe is best for a pork loin roast.
Insert a thermometer into the thickest part. At 145 F the roast will be juicy and tender.
If you prep the sauce and garlic paste ahead, yes. The oven time is mostly hands off.
Tent the roast lightly with foil again and continue cooking until it reaches the proper temperature.
It is naturally dairy free as written.
📖 Recipe
Mustard Pork Loin Roast
- Prep Time: 20 minutes
- Cook Time: 1 hour 10 minutes
- Total Time: 1 hour 30 minutes
- Yield: 8 servings 1x
- Category: Main Course
- Method: Roasting
- Cuisine: American
Description
This Mustard Pork Loin Roast is tender, juicy, and packed with flavor. With a warm mustard crust, simple ingredients, and hands-off oven time, it's the perfect cozy roast for dinner or gatherings. Rustic yet elegant, it's a recipe you'll want to make again and again.
Ingredients
- For the mustard sauce
- ¼ cup stone ground mustard
- 1 tablespoon Dijon mustard
- 1 tablespoon yellow prepared mustard
- 2 teaspoons minced fresh rosemary
- 1 teaspoon olive oil
- 1 teaspoon honey
- ½ teaspoon sweet curry powder
- For the pork loin roast
- 1 boneless pork loin roast, about 3.5 pounds (not pork tenderloin)
- 4 large cloves garlic, minced
- 2 teaspoons kosher salt
- ½ teaspoon freshly ground black pepper
- 2 teaspoons canola oil
- Minced fresh rosemary and parsley, optional garnish
Instructions
- Make the mustard sauce: In a small bowl, whisk together stone ground mustard, Dijon mustard, yellow mustard, rosemary, olive oil, honey, and sweet curry powder until smooth. Set aside.
- Prep and tie the pork loin: Pat the pork dry and tie with kitchen string every 2 inches for even roasting.
- Make the garlic and salt paste: On a cutting board, mash garlic and salt together with the side of a knife to make a smooth paste. Mix in black pepper.
- Season the pork: Rub garlic paste all over the pork loin. Let it rest at room temperature while the oven preheats.
- Preheat and sear: Preheat oven to 350°F. Heat canola oil in a 12-inch skillet over medium-high heat. Sear pork, fat side down first, for 4 to 5 minutes per side until golden.
- Transfer and coat with mustard: Place pork on a rack in a roasting pan, fat side up. Brush generously with mustard sauce.
- Tent and roast: Loosely tent with foil and roast for 35 minutes.
- Finish roasting: Remove foil and roast for 15 to 20 minutes more, until internal temp reaches 145°F.
- Rest and slice: Rest 10 minutes, remove string, and slice into ½-inch pieces. Garnish with rosemary or parsley if desired.
Notes
Blot the pork dry before searing for a golden crust. Don't skip the resting time - it locks in juices. Tie and season the roast ahead for easy prep. Great for dinner and leftovers alike!
Nutrition
- Serving Size: 1 slice
- Calories: 320
- Sugar: 1g
- Sodium: 410mg
- Fat: 18g
- Saturated Fat: 5g
- Unsaturated Fat: 12g
- Trans Fat: 0g
- Carbohydrates: 3g
- Fiber: 0g
- Protein: 33g
- Cholesterol: 95mg
Serving Suggestions
Serve your Mustard Pork Loin Roast with mashed potatoes, roasted carrots, maple glazed Brussels sprouts, or a crisp green salad. Crusty bread or garlic bread rolls make a lovely addition. For a holiday table, pair it with sweet potato casserole or green beans with toasted almonds.
You may also like my Creamy Mushroom Risotto for a cozy side dish:
https://letsflytasty.com/creamy-mushroom-risotto/
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