01 -
Rub the roast all over with olive oil.
02 -
Strip rosemary leaves from the stalk, then chop. Combine chopped leaves with garlic, sea salt, and pepper.
03 -
Rub the seasoning mixture around the outside of the roast to form a crust.
04 -
Preheat skillet or multicooker to 400 ℉. Add roast and sear on each side until lightly browned (4-6 minutes).
05 -
Deglaze the pan with balsamic vinegar and transfer all contents to a slow cooker.
06 -
Cover and cook on low for 8-9 hours.
07 -
Remove roast from the slow cooker and let it rest for 15-30 minutes, then slice to serve.