To the slow cooker, whick together the broth or water, soy sauce, ground ginger, minced onion, and 1 tsp of the sesame seeds and the cornstarch. Stir in the chicken pieces, the set on low and cook for 8 hours.
When there is about an hour left, add the frozen broccoli.
Cook the brown rice as directed. (I use a rice cooker...love how it turns out, and how convenient it is!)
Serve Sesame Ginger Chicken and broccoli with the rest of the sesame seeds sprinkled on top, over brown rice.