Rub roast with oil.
Combine rosemary, garlic, parsley, and salt in a small bowl and rub over the entire roast.
In a skillet, brown the roast on all sides and transfer to your slow cooker fat side up.
Heat a tablespoon of oil in the same skillet. Add carrots and onions and sauté for 5 minutes.
Transfer carrots and onions to the slow cooker.
Add potatoes to the slow cooker as well.
Pour beef broth into the slow cooker over the roast.
Cover and cook for 7 hours on low.
Remove the meat to a cutting board and slice it thinly against the grain.
With a slotted spoon, transfer potatoes and carrots to a serving dish.