Brown the ground beef in a large skillet over medium-high heat. Drain off any excess grease.
Transfer the browned beef to a slow cooker.
Add the beef broth, potatoes, carrots, celery, onion, garlic, tomato paste, Worcestershire sauce, thyme, rosemary, salt, and pepper to the slow cooker.
Stir to combine all ingredients.
Cover and cook on low for 8 hours or on high for 4 hours, or until the vegetables are tender.
Serve hot and enjoy!
Notes
For a thicker stew, you can mix 2 tablespoons of cornstarch with 1/4 cup of cold water and stir it into the stew during the last 30 minutes of cooking.