In a bowl, add the chicken, curry powder, and cornstarch. Mix together, until the chicken is evenly coated.
Heat the oil in a wok or a large frying pan over medium high heat. Add the chicken, saute it for about 5 to 10 minutes. Until the pink is gone. You do not have to cook thoroughly.
Remove the chicken from the pan, then place it to the bottom of the slow cooker.
In another bowl, mix together the hoisin sauce, rice wine vinegar, soy sauce, ground ginger, and the brown sugar.
Once it is mixed well together, pour the sauce over the chicken. Stir together to evenly coat the chicken.
Cook on low for 2 hours, then add the broccoli. Stir slightly, then cook on low for another 30 minutes to an hour.
Enjoy!
