In a microwave safe bowl, microwave the dark chocolate chips on 50% power, in intervals of 30 seconds, stirring between each interval, until it is fully melted.
Sprinkle on the dried cranberries and peanuts (and flaky se salt if using).
Place in fridge for about 2 hours or until chocolate hardens.
This makes a great Holiday gift. Just put the holiday bark into cute bags and give to friends and family for a sweet, healthy, and delicious surprise!