Line a rimmed small baking sheet with parchment paper.
Evenly spread the Greek yogurt onto the parchment paper, forming a rectangle about ¼-inch thick. Sprinkle the chocolate chips, crushed Friendly Grains Crunchy Rollers S’mores, and mini marshmallows evenly over the yogurt. Lightly press the toppings into the yogurt, so they adhere. Cover with plastic wrap.
Place the baking sheet in the freezer for at least 3 hours, or until the yogurt is fully set.
Once frozen, break the bark into pieces and enjoy immediately!