Season the cubed stew meat with a pinch of sea salt and black pepper and sprinkle the flour over the meat.
Heat the olive oil in your slow cooker over medium-high heat then add the meat. Cook the meat for 5 minutes until browned.
Reduce the heat to medium-low then add the onions and carrot. Cook for 5 minutes until the vegetables are soft. Add the garlic and cook for 1 minute.
Add the tomato paste and pour in the red wine. Cook until the red wine evaporates then add the beef broth.
Add the rosemary and bay leaf, season with salt and pepper then let the stew simmer for 4 hours on high or 8 hours on low. The meat should be fork tender.
Add the peas during the last 15 minutes of cooking and remove the rosemary stem and bay leaf. Taste the slow cooker beef stew and season with salt and pepper if necessary.
Serve the slow cooker beef stew over pasta or rice and enjoy warm!