Use very thick Greek yogurt: Whole milk Greek yogurt works best because it freezes creamy instead of icy. If your yogurt looks loose or watery, strain it briefly before using.
Keep the layer thin and even: Spreading the yogurt about ¼ inch thick helps it freeze quickly and makes the bark easy to break into pieces instead of cracking unevenly.
Dry the fruit first: Pat fresh fruit dry with a paper towel before adding it to the yogurt. This prevents excess moisture from creating icy spots once frozen.
Press toppings in lightly: Gently pressing the fruit, granola, and almonds into the yogurt helps everything stick once frozen and prevents toppings from falling off.
Freeze solid before breaking: Make sure the bark is completely frozen before breaking it into pieces. If it starts to soften, return it to the freezer for a few minutes before handling.