01 - Place the beef cubes into the slow cooker vessel.
02 - Distribute the carrots, potatoes, celery, onion, and minced garlic evenly over the beef.
03 - In a separate bowl, whisk together the beef broth, tomato paste, Worcestershire sauce, and red wine (if utilizing). Pour this mixture over the contents of the slow cooker.
04 - Evenly sprinkle the salt, black pepper, dried thyme, and dried rosemary over the ingredients. Add the bay leaves.
05 - Cover the slow cooker and cook on the low setting for 8 hours, or on the high setting for 4-5 hours, until the beef is fork-tender and the vegetables are thoroughly cooked.
06 - Approximately 30 minutes before serving, stir in the frozen peas.
07 - Should a thicker consistency be desired, combine cornstarch and water in a small bowl to create a slurry. Stir this slurry into the stew and continue cooking on high for an additional 20-30 minutes, or until the stew has reached the desired thickness.
08 - Carefully remove and discard the bay leaves. Garnish the finished stew with fresh chopped parsley and serve hot.