A juicy pork loin doesn't require a whole lot of fuss for it to be delicious, so we're keeping things simple with a classic rub of garlic, rosemary, salt, and pepper. To make things even simpler, the pork cooks alongside halved red potatoes for a one-pan meal. About an hour later you've got meat with a golden-brown crust and potatoes with crispy edges and fluffy centers. This sheet pan supper is definitely simple enough to cook on a weeknight, but it's also the recipe to keep in your back pocket when you're having friends over for dinner.
A Slow Roast Is Best for Pork Loin
Because of its size, pork loin benefits from roasting at a slightly lower temperature than you'd cook pork tenderloin. But don't let the cook time dissuade you from what we still consider a weeknight dinner. This slow-roasted loin comes with a mostly hands-off cook time, and asks no more of you than flipping the meat and adding the potatoes to the baking sheet.
The slow cooking takes advantage of the loin's single-sided layer of fat, which, when rendered, provides the flavorful fat the potatoes cook in.
Roasted Rosemary and Garlic Pork Loin and Potatoes
finely chopped fresh rosemary leaves
freshly ground black pepper
(2- to 2 1/2-pound) boneless pork loin roast, trimmed of excess fat (keep a thin layer of fat)
small red potatoes, halved or quartered if large
Arrange a rack in the middle of the oven and heat to 375°F.
Place the oil, garlic, rosemary, salt, and pepper in a small bowl and rub together with your fingers to create a paste. Rub the paste all over the pork, then place fat-side down on a rimmed baking sheet. Roast for 30 minutes.
Flip the pork to be fat-side up. Add the potatoes to the baking sheet, stir to coat with the rendered fat, and arrange to be cut-side down in a single layer around the pork. Continue roasting until the internal temperature of the pork registers 145°F, about 20 minutes more. Let the pork rest for 10 minutes before slicing and serving with the potatoes.
Storage: Leftovers can be stored in the refrigerator in an airtight container for up to 4 days.