In a mixing bowl, combine Greek yogurt, vanilla extract, and your chosen sweetener, stirring until the mixture becomes smooth and evenly blended.
Gently add the blueberries into the yogurt mixture, folding them in carefully to avoid crushing them and releasing excess moisture.
If using chocolate chips, sprinkle them into the mixture and fold lightly to distribute them evenly throughout.
Line a baking tray with parchment paper to prevent sticking and ensure easy removal after freezing.
Using a spoon, scoop small portions of the mixture onto the tray, spacing them evenly to form individual clusters.
Place the tray in the freezer and allow the clusters to freeze for at least 2–3 hours until they are fully firm.
Once frozen, transfer the clusters into an airtight container for storage to maintain freshness and texture.
Serve directly from the freezer and enjoy a cold, creamy, high-protein snack.