01 - Coat beef cubes evenly with salt, pepper, and dried thyme.
02 - Transfer seasoned beef to slow cooker. Top with chopped onion and minced garlic.
03 - Whisk together beef broth, Worcestershire sauce, tomato paste, and flour in a medium bowl until completely smooth.
04 - Pour liquid mixture over beef and vegetables. Stir gently to incorporate. Cover and cook on low for 6-7 hours or high for 3-4 hours until beef is fork-tender.
05 - Taste gravy and adjust seasoning if necessary. Serve over mashed potatoes, noodles, or rice. Garnish with chopped fresh parsley.