Place beef slices into your slow cooker and pour the beef broth and oyster sauce over the beef.

Cover and cook on low for 6-8 hours or 3-4 hours on high.

When beef is about ready, cook broccoli according to pkg directions in the microwave.

In a small bowl, combine the water and cornstarch together until well blended and there are no lumps. Add the the cooked beef mixture in the slow cooker and stir to combine.

Once broccoli is cooked, drain off any water and add to the beef. Stir to combine.

Cook for another few minutes in the slow cooker until the sauce is thick. Serve over cooker rice and sprinkle with sesame seeds if desired. Serves 4-6.