01 - Coat beef cubes evenly with salt, pepper, and dried thyme, ensuring all pieces are well-seasoned.
02 - Transfer seasoned beef to the slow cooker insert. Layer chopped onion and minced garlic over the meat.
03 - Whisk together beef broth, Worcestershire sauce, tomato paste, and flour in a medium bowl until completely smooth and lump-free.
04 - Pour the gravy mixture over the beef and vegetables. Stir gently to distribute evenly, taking care not to break up the meat pieces.
05 - Cover and cook on low setting for 6-7 hours or on high for 3-4 hours. The beef is done when it's fork-tender and the gravy has thickened nicely.
06 - Taste the gravy and add additional salt or pepper if needed to balance the flavors.
07 - Plate the beef tips and gravy over mashed potatoes, egg noodles, or steamed rice. Garnish with freshly chopped parsley for a pop of color and fresh flavor.