Place the chicken breasts in the crock pot and season with salt and pepper.
In a bowl, mix together the cranberry sauce, garlic, onion soup mix, orange zest and juice, and Dijon mustard.
Spoon the cranberry-orange mixture over the chicken.
Cover and cook on LOW for 4 1/2- 5 hours, or until the chicken reaches an internal temperature of 165°F.
Add the broccoli florets to the crock pot.
Cover and cook for another 15- 30 minutes, or until the broccoli is cooked to your liking.
Slice or shred the chicken and serve with the cranberry-orange sauce and the oniony gravy from the crock pot.
Serve over wild rice, potatoes, or pasta and enjoy!