01 -
Coat the chuck roast evenly with salt, black pepper, garlic powder, onion powder, smoked paprika, dried rosemary, and dried thyme. Pat the seasoning into all surfaces for thorough flavor infusion.
02 -
Place quartered onions and smashed garlic cloves in an even layer at the bottom of the slow cooker to impart aromatics and prevent sticking.
03 -
Position the seasoned roast atop the onions and garlic. Pour beef broth over the roast, crumble the bouillon cube, and add Worcestershire sauce, balsamic vinegar, and tomato paste. Liquids should partially cover the meat without submerging it fully.
04 -
Cover and cook on LOW heat for 8–9 hours or HIGH heat for 4–5 hours until the beef is fork-tender and easily shreds. Avoid removing the lid during cooking to maintain consistent temperature and moisture.
05 -
Remove the beef from the slow cooker and tent loosely with foil. Let rest for 10–15 minutes to redistribute juices and retain succulence.
06 -
Skim excess fat from the cooking liquid. Whisk cornstarch with cold water to create a slurry. Set slow cooker to HIGH, stir in the slurry, and simmer uncovered for 5–10 minutes until the sauce thickens into a smooth gravy.
07 -
Slice or shred the beef and spoon gravy over. Serve alongside mashed potatoes, roasted root vegetables, or buttered rolls as preferred.