Boneless beef short ribs are seared, and then simmered for hours until they are silky and tender. Brown sugar and apple cider, along with parsnips, carrots, and potatoes, add notes of sweetness add to this Hanukkah favorite.
Preheat oven to 325 degrees. Place a wire rack over a rimmed baking sheet; set aside. Season beef with salt and pepper. Heat oil in a 9-quart Dutch oven over high heat until hot but not smoking. Working in batches, cook the beef, flipping once, until browned, 2 to 3 minutes per side. Transfer beef to the wire rack. Reduce heat to medium-low.
Add onions to pot; cook, stirring occasionally, until translucent, about 10 minutes. Raise heat to medium. Add garlic; cook 3 minutes, stirring occasionally. Stir in brown sugar, cider, stock, and 1/2 cup water. Add thyme, rosemary, and parsley. Return beef to pot. Bring to a boil. Remove from heat.
Cover; transfer to oven. Cook until almost fork tender, about 1 1/2 hours.
Remove pot from oven. Stir in parsnips, carrots, and potatoes. Return to oven; cook until fork-tender, 1 hour 10 minutes more. Gently transfer beef and vegetables to a baking sheet or a plate.
Skim fat from cooking liquid. Simmer over medium heat until reduced by about half, about 7 minutes. Return beef and vegetables to pot. Season with salt and pepper; toss gently. Transfer to serving platter. Sprinkle with parsley.