Season the beef cubes with salt, pepper, paprika, onion powder, Italian seasoning, and thyme.
Place the halved baby potatoes into the bottom of the slow cooker.
Add the seasoned beef over the potatoes.
Scatter the minced garlic over the beef.
Top with the butter slices.
Pour in the beef broth and Worcestershire sauce.
Drizzle with the olive oil.
Cover and cook on LOW for 7 to 8 hours or HIGH for 4 to 5 hours, until the beef is fork-tender and the potatoes are cooked through.
Gently stir everything together.
Sprinkle with fresh parsley before serving.