Method Line a large rimmed baking sheet with parchment paper and make sure it fits flat in your freezer.
Stir the Greek yogurt, protein powder and maple syrup together until smooth.
Spread the yogurt on the parchment in an even layer about 1 cm (1/2 inch) thick.
Scatter the sliced strawberries, blueberries, chopped chocolate and pumpkin seeds over the top and press them in lightly.
Freeze until completely solid, at least 3 hours.
180 min timer Lift out the bark, break or cut it into 16 pieces and store in a freezer bag. Let pieces sit 2 to 3 minutes before eating.
Tips Let it sit 5 minutes out of the freezer before eating. Storing and reheating Keeps 2 months in a freezer bag.