Place the cubed beef chuck roast and halved baby potatoes into the basin of a 6-quart slow cooker.
In a small mixing bowl, whisk together the melted butter, minced garlic, dried thyme, dried rosemary, salt, and black pepper.
Pour the beef broth over the beef and potatoes in the slow cooker.
Drizzle the garlic butter mixture evenly over the beef and potatoes.
Toss the ingredients gently to ensure all surfaces are coated with the seasoned butter.
Cover and cook on the low setting for 7 to 8 hours, or on the high setting for 4 hours, until the beef is fork-tender.
Garnish with fresh parsley before serving directly from the slow cooker.