Prepare the Pan: Line a small sheet pan, tray, or freezer-safe container with parchment paper. Make sure the paper comes up the sides a little so it is easy to lift the frozen bark out later. This step saves time and prevents sticking.
Mix the Yogurt Base: In a bowl, stir the Greek yogurt until smooth and creamy. If using plain yogurt, mix in a little honey, maple syrup, or vanilla for extra flavor. For a healthy chocolate yogurt bark, keep the sweetener light. Spread the yogurt onto the lined pan in an even layer.
Add the Chocolate: Melt dark chocolate or semi-sweet chocolate in short bursts in the microwave, stirring between each round until smooth. Drizzle the melted chocolate over the yogurt, then use a spoon or knife to swirl it gently. For yogurt bark with chocolate chips, sprinkle a few on top instead of swirling.
Sprinkle on Toppings: Scatter berries, banana slices, chopped nuts, granola, or seeds across the top. Press larger toppings in lightly so they stay in place as the bark freezes. This is a great moment to build flavor, color, and crunch without making the bark too heavy.
Freeze and Break Into Pieces: Place the tray in the freezer and let it freeze until completely firm, usually about 3 to 4 hours. Once frozen, lift it out using the parchment paper and break it into rough pieces. Store the pieces in a freezer-safe container and grab one whenever a frozen chocolate yogurt snack sounds good.