Garlic Herb Pork Loin Roast with Potatoes and Onions Step-by-step instructions

Before you start

Before beginning the cooking process, ensure the pork loin roast sits at room temperature for no more than thirty minutes to promote even cooking. Wash and halve the baby potatoes, and peel and cut the sweet onions into thick, uniform wedges.

Finely mince the fresh garlic cloves, and chop the fresh herbs. Preheat the oven to 400°F (204°C) and line a large roasting pan with heavy-duty aluminum foil to catch the delicious, sizzling drippings.

Instructions

Preparation and Herb Rub Application

1. 1Prepare and Apply Garlic Herb Rub
   Preheat the oven to 400°F (204°C). In a small bowl, combine two tablespoons of olive oil, minced garlic, and chopped herbs to form a wet paste. Pat the pork loin roast dry with paper towels, then rub the prepared garlic herb paste evenly over all sides of the roast, ensuring the fat cap is well covered.
   Look for The roast is completely covered in a fragrant, thick herb paste.
   Tip Dry the meat thoroughly to help the herb rub stick better.
2. 2Arrange the Vegetables
   Place the halved baby potatoes and sweet onion wedges directly into a large foil-lined roasting pan. Drizzle the remaining tablespoon of olive oil over the vegetables. Toss the potatoes and onions thoroughly to coat them evenly, then arrange them in a single layer around the perimeter of the pan.
   Look for Vegetables are evenly arranged around the pan edges.
   Tip Cut the onions into thick wedges so they do not burn.

At the end of this initial phase, the pork loin roast should be completely and evenly coated in the aromatic garlic and herb mixture, with no bare spots remaining.

The baby potatoes and sweet onion wedges should be tossed lightly in olive oil and arranged neatly around the roast in a single layer. The entire roasting pan will look vibrant and fresh, with the enticing scent of garlic and herbs already filling the immediate kitchen area.

Initial Roasting and Vegetable Sizzle

3. 3Nestle and Roast the Pork Loin
   Nestle the seasoned pork loin roast in the center of the roasting pan, surrounded by the baby potatoes and sweet onions. Place the pan in the preheated oven and roast uncovered for 45 minutes. The high heat will begin to brown the exterior of the pork loin and render its fat cap, while the potatoes and onions start to sizzle and soften in the rendering drippings.
   Look for The pork begins to brown and the vegetables start sizzling.
   Tip Do not crowd the vegetables; give them room to roast.

As this roasting phase concludes, the kitchen will be filled with a rich, savory aroma of roasting meat and herbs. The pork loin roast will begin to develop a light golden-brown color on its herb crust, and the baby potatoes will start to sizzle in the pan. The sweet onions will soften and display caramelized edges, indicating they are absorbing the heat and beginning to sweeten beautifully as the fat renders.

Basting, Finishing, and Resting

4. 4Baste the Sizzling Vegetables
   Carefully remove the roasting pan from the oven. Use a large spoon to gather the hot pan drippings and spoon them generously over the sizzling baby potatoes and sweet onions to baste them. Return the roasting pan to the oven and continue roasting for another 15 to 20 minutes, or until the pork loin reaches an internal temperature of 145°F (63°C) and the vegetables are completely tender.
   Look for The vegetables are glistening and tender when pierced with a fork.
   Tip Basting the vegetables in drippings adds incredible savory flavor.
5. 5Rest and Slice the Roast
   Ensure the pork loin roast has reached a safe internal temperature of 145°F (63°C), then transfer it to a clean cutting board. Let the meat rest for at least 3 minutes to allow the succulent juices to redistribute throughout the roast. Slice the pork loin into thick rounds and serve immediately alongside the tender baby potatoes and caramelized sweet onions.
   Look for The sliced pork is juicy, tender, and slightly blush pink.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Resting is crucial to prevent the juices from running out.

At the final checkpoint, the pork loin roast will sport a deeply caramelized, golden-brown crust, and the baby potatoes will be tender and glistening with savory pan drippings. Slicing through the rested roast should reveal a succulent, juicy interior. The onions will be completely tender and sweet, providing a perfect contrast to the savory pork. Ensure the roast rests for at least three minutes to lock in all the natural juices.

Common mistakes

One common error is overcooking the pork loin, which is a very lean cut of meat that can dry out quickly if left in the oven too long. Another mistake is crowding the roasting pan too tightly, which traps steam and prevents the baby potatoes and sweet onions from roasting and caramelizing properly.

Finally, skipping the resting period is a major mistake; carving the roast immediately will cause all the delicious, succulent juices to run out onto the cutting board.

How to tell it’s done

To determine perfect doneness, insert an instant-read meat thermometer into the thickest part of the pork loin roast. The pork is cooked safely and perfectly when the thermometer registers an internal temperature of 145°F (63°C).

At this temperature, the meat remains incredibly juicy, tender, and slightly blush pink in the center. Remember to let the roast rest for at least three minutes after removing it from the oven to allow the juices to redistribute.

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