Place the cubed beef chuck roast into the bottom of the slow cooker insert in an even layer.
In a medium mixing bowl, whisk together the melted salted butter, minced garlic, dried oregano, dried thyme, salt, black pepper, and beef broth.
Pour the garlic butter mixture over the beef cubes and toss with a spoon to ensure all pieces are thoroughly coated.
Cover the slow cooker with its lid and cook on High for 4 hours or Low for 7 to 8 hours until the beef is fork-tender.
Turn off the heat, stir the beef to incorporate the juices, and garnish with fresh chopped parsley before serving.