A simple and convenient slow cooker roast beef recipe that starts with a frozen beef roast. Perfectly tender and flavorful with minimal prep time.
1 (3 to 4 pounds) frozen beef chuck roast
1 teaspoon kosher salt
1/2 teaspoon black pepper
1 teaspoon garlic powder
1 teaspoon onion powder
1 teaspoon dried thyme
1 cup beef broth
2 medium carrots, peeled and cut into 1-inch pieces
2 medium celery stalks, cut into 1-inch pieces
1 medium onion, sliced
2 tablespoons tomato paste
2 cloves garlic, minced
1 tablespoon Worcestershire sauce
2 tablespoons cornstarch
2 tablespoons cold water
Place the frozen beef chuck roast into the slow cooker.
In a small bowl, mix together kosher salt, black pepper, garlic powder, onion powder, and dried thyme. Sprinkle the seasoning mixture evenly over the roast.
Add the carrots, celery, and sliced onion around the roast in the slow cooker.
In a separate bowl, whisk together beef broth, tomato paste, minced garlic, and Worcestershire sauce until combined.
Pour the broth mixture over the roast and vegetables in the slow cooker.
Cover the slow cooker with the lid and cook on low for 8 hours, or until the roast is tender and easily shredded with a fork.
Once cooked, carefully remove the roast and vegetables from the slow cooker and transfer to a serving platter. Cover with foil to keep warm.
In a small bowl, mix cornstarch and cold water until smooth to create a slurry.
Pour the cooking liquid from the slow cooker into a saucepan and bring to a simmer over medium heat.
Gradually whisk in the cornstarch slurry and cook for 2 to 3 minutes, stirring constantly, until the sauce thickens.
Serve the roast beef sliced or shredded with the cooked vegetables and the thickened sauce spooned over the top.