Combine the 1 cup of dried cranberries with 2 cups of hot water (I just use the hot water from my sink). Let the cranberries sit for 10 minutes so they begin to plump back up. Drain and add to a large bowl.
Add the broccoli, cheese, onion and sunflower seeds to the large bowl and toss to combine.
For the dressing:
Whisk together the mayo, apple cider vinegar and sugar until smooth and sugar is dissolved. Pour dressing over broccoli mixture and toss to coat. Keep in fridge until ready to serve. Enjoy!
Soaking the dried cranberries is an optional step, but is highly recommended.