Tender and juicy, this Slow Cooker Balsamic Beef is absolutely incredible! Add everything to your crockpot in the morning, then in the evening, you'll have sweet and savory, tangy balsamic beef ready for dinner.
Place the 4 pounds boneless chuck roast in the bottom of the slow cooker.
Add the 1 ½ teaspoon Kosher salt, 1 teaspoon cracked black pepper, 1 teaspoon onion powder, and 1 teaspoon Italian seasoning to a small bowl and whisk to combine. Sprinkle the rub on the roast and rub it generously onto the roast.
In a medium bowl, stir together ¾ cup balsamic vinegar, ½ cup brown sugar, 1 tablespoon Worcestershire, ½ cup beef broth, and 2 teaspoons garlic,.
Pour the broth mixture into the slow cooker with the roast.
Cover and cook on low for 8-10 hours.
In a small bowl, whisk together 2 tablespoons cornstarch and 3 tablespoons water to make a paste. Stir it into the liquid inside the slow cooker.
Continue cooking for an additional 30-60 minutes. The cornstarch mixture will help thicken the sauce.