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Dinner · Part 2 of 3: Instructions

Christmas Herb-Roasted Pork Loin with Golden Potatoes Step-by-step instructions

A beautifully browned, herb-crusted roasted pork loin sliced on a platter surrounded by golden roasted potatoes.
Prep
Cook
Total
Serves
8
Includes 15 min resting

Before you start

Before beginning the cooking process, ensure the pork loin is kept safely in the refrigerator until you are ready to prep, as raw meat should never sit at room temperature.

Wash and dry the baby potatoes thoroughly, then slice them in half. Mince the garlic cloves and finely chop the fresh herbs. Measure out the broth and soften the unsalted butter so it blends easily with the herbs.

Ingredients at a glance (6)
  • 3 lb boneless pork loin roast, fat cap intact
  • 1/2 cup unsalted butter, softened
  • 4 cloves garlic, minced
  • 3 tbsp finely chopped fresh herbs
  • 1 1/2 lbs baby potatoes, halved
  • 1 cup broth

Instructions

Preparing the Herb Butter and Coating the Roast

  1. Prepare the Garlic-Herb Butter
    In a small mixing bowl, combine the softened unsalted butter, minced garlic, and chopped fresh herbs. Use a fork or spatula to mash the ingredients together until a smooth, uniform herb butter forms.
    Look for The mixture should be fully integrated and easily spreadable.
    Tip Ensure the butter is truly at room temperature to avoid lumps.
  2. Coat the Pork and Potatoes
    Pat the pork loin dry with paper towels. Rub two-thirds of the prepared garlic-herb butter evenly over all sides of the pork loin, focusing on the fat cap. Toss the halved baby potatoes with the remaining herb butter in a separate bowl until well coated.
    Look for The pork and potatoes should be covered with a visible layer of herbs and butter.
    Tip Drying the meat first helps the herb butter stick much better.

The garlic-herb butter should be thick, highly aromatic, and easy to spread over the pork loin. The pork loin and baby potatoes must be completely coated in the herb mixture, ensuring every bite is seasoned. Check that the fat cap on the pork is facing upward in the roasting pan before proceeding to the roasting stage.

Roasting the Pork Loin and Potatoes

  1. Roast the Pork and Potatoes
    Place the buttered pork loin fat-side up in the center of a large roasting pan. Arrange the coated baby potatoes around the roast in a single layer. Carefully pour the broth into the bottom of the pan around the potatoes, avoiding pouring it directly over the pork. Roast in a preheated oven at 375°F (190°C) for about 60 to 70 minutes.
    Look for The broth should bubble steadily and the potatoes should sizzle.
    Tip Keep the potatoes in a single layer so they brown evenly.

During this phase, the kitchen will fill with the rich aroma of roasting garlic and herbs. The broth in the roasting pan should bubble steadily, and the potatoes will begin to soften. The pork loin will develop a beautiful golden-brown exterior, and the juices will begin to caramelize on the bottom of the pan as it roasts.

Resting, Carving, and Serving

  1. Check Temperature, Rest, and Carve
    Remove the roasting pan from the oven once the pork loin reaches an internal temperature of 145°F (63°C) when tested with a meat thermometer in the thickest part. Transfer the pork to a cutting board and let it rest for at least 15 minutes to allow the juices to redistribute. Keep the potatoes warm in the pan. Slice the rested pork and serve immediately alongside the golden potatoes.
    Look for The pork exterior should be deeply browned and herb-crusted.
    Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
    Tip Never skip the resting period, or the delicious juices will run out.

The roasted pork loin must rest quietly on a cutting board, allowing the hot juices to settle back into the meat fibers. The potatoes should look deeply golden, slightly wrinkled, and crispy on the edges.

When sliced, the pork loin should be incredibly juicy, tender, and perfectly cooked throughout with a beautiful herb crust.

Common mistakes

One common mistake is skipping the resting period for the pork loin. Cutting into the meat immediately after roasting causes all the delicious juices to run out onto the cutting board, leaving the pork dry and tough.

Another error is pouring the broth directly over the herb-rubbed pork, which washes away the flavorful butter crust before it has a chance to sear and brown properly in the oven.

How to tell it’s done

The pork loin is perfectly cooked when a digital meat thermometer inserted into the thickest part of the roast registers an internal temperature of 145°F (63°C). At this temperature, the meat remains safe, exceptionally juicy, and tender.

Always allow the roasted pork loin to rest for at least 3 minutes to let the juices redistribute, though resting for fifteen minutes is recommended for the absolute best texture.

  • Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest

Coming up in Part 3: common questions

  • Can pork loin be substituted with pork tenderloin?
  • Why is the pork loin dry?
  • What type of broth works best for this recipe?

Also in Part 3: variations (Maple-Glazed Pork, Lemon-Herb Pork), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)