Ingredients
- 3 1/2 lb boneless center-cut pork loin roast
- 1 1/2 tbsp olive oil
- 2 tsp kosher salt
- 1 tsp black pepper
- 2 tsp chopped rosemary
- 1 tsp dried thyme
- 1 tsp garlic powder
- 1 tsp onion powder
- 1 tbsp Dijon mustard
- 1 cup low-sodium chicken broth
- 1 large onion, thickly sliced
Instructions
Follow each step in order. The directions below are written so a beginner can understand what to do, what to look for, and when to move on to the next step.
- Step 1.Heat the oven to 350°F and let the pork loin stand at room temperature for about 20 minutes while you prepare the seasoning.
- Step 2.Pat the roast very dry and trim only thick surface fat, leaving a thin layer that can baste the meat as it cooks.
- Step 3.Mix olive oil, salt, pepper, rosemary, thyme, garlic powder, onion powder, and Dijon into a paste, then rub it over the roast.
- Step 4.Arrange the sliced onion in a roasting pan, place the pork fat-side up on top, and pour the broth around rather than over the seasoned surface.
- Step 5.Roast uncovered for about 50 minutes before beginning to check the center with an instant-read thermometer.
- Step 6.Continue roasting until the thickest center reaches 145°F, checking every 8 to 10 minutes so the lean meat does not overcook.
- Step 7.Transfer the roast to a cutting board and tent loosely with foil, keeping the pan and its juices for an optional quick sauce.
- Step 8.Rest the pork for at least 15 minutes; this pause is essential for retaining moisture when the roast is sliced.
- Step 9.Skim excess fat from the pan juices and simmer them briefly if desired, scraping up browned bits and adjusting seasoning.
- Step 10.Slice the pork loin across the grain into 1/2-inch pieces and serve with the warm pan juices and roasted onions.

