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Season beef chuck roast with salt and black pepper.
Heat olive oil in a skillet and sear roast on all sides.
Place potatoes and onions in the crockpot.
Add roast on top of vegetables.
In a bowl, whisk beef broth, balsamic vinegar, honey, garlic, Worcestershire sauce, and thyme.
Pour mixture over roast.
Cover and cook on LOW for 8–9 hours or HIGH for 5–6 hours.
Shred or slice beef before serving with potatoes and sauce.
