Step 1

Pat pork dry with paper towels. Liberally season pork on all sides with all-purpose seasoning. Wrap pork in plastic wrap and refrigerate for at least 1 hour, or up to 24 hours.

Step 2

Adjust oven rack to middle position and heat oven to 300° F. Heat oil in a large cast iron skillet over medium-high heat until just smoking. Unwrap pork and place in skillet. Cook until browned on all sides, about 7 minutes.

Step 3

Spread orange marmalade on top of the pork. Transfer to the oven and roast until pork registers 140-145° F on an instant-read thermometer, about 50 minutes – 1 hour.

Step 4

Transfer pork to a cutting board and let rest for at least 10-15 minutes. Thinly-slice the pork and garnish with fresh herbs, if desired.