Prep your ingredients: If you're a morning person, you can chop everything fresh. If you're like me and morning coordination isn't your thing, prep everything the night before. I add all ingredients from stew meat through beef broth directly into the removable crock pot insert, cover it, and refrigerate overnight.
Start cooking: In the morning, place your crock pot insert into the slow cooker base, cover, and cook on low for 6-8 hours. The cooking time depends on how large your meat chunks are – mine usually takes about 6 hours to reach that perfect melt-in-your-mouth tenderness.
Thicken the stew: When you get home and the meat is tender, it's time to thicken things up. In a medium bowl, whisk together the ¼ cup flour with about ½ cup of the hot cooking liquid until smooth. Pour this mixture back into the crock pot and stir well to combine.
Finish cooking: Turn the heat setting to high, cover, and cook for another 30-45 minutes, or until the broth has reached your desired thickness. Remember that the stew will continue to thicken as it cools, so don't panic if it seems a bit thin at first!
Add the finishing touch: Stir in the ½ cup frozen peas and let them warm through for about 5 minutes. The heat from the stew will cook them perfectly while maintaining their bright green color.
Serve and enjoy: Ladle into bowls and serve with your favorite sides!