This version of the holiday candy calls for nonfat Greek yogurt so you can indulge in a guilt-free treat anytime.
Line a baking sheet with wax paper. Using a small offset spatula, spread the yogurt in an even layer, about 1/4 to 1/3-inch thick. Top with chopped strawberries, chocolate and pistachios. Freeze until firm. Break into shards and keep frozen until ready to serve.