Season beef roast with salt, pepper, paprika, and thyme.
Heat olive oil in a skillet and sear roast on all sides until browned.
Place roast in a slow cooker with sliced onions, garlic, beef broth, and Worcestershire sauce.
Cook on low for 6–8 hours or until beef is tender and easily shredded.
Serve hot with onions and drizzle of the savory cooking juices.
