Special equipment: a 6- to 8-quart slow cooker
For the beef: Toss the roast in a 6- to 8-quart slow cooker with the rosemary, salt and a generous grinding of pepper. Add the pepperoncini with their liquid and the beef broth. Cover and cook on low until the meat is very tender and easy to pull apart, 7 to 8 hours.
For the caramelized onions: When the slow cooker has about 15 minutes left, heat the butter and olive oil in a large skillet over medium-high heat. Add the onions, salt and a few grinds of pepper. Cook, stirring occasionally, until tender and lightly browned, about 10 minutes.
Remove the roast to a bowl and shred using 2 forks, then return it to the slow cooker to keep warm.
Serve as you please, leftovers can be frozen, be sure to keep in the liquid to keep moist when reheating. |