In a medium bowl, add Greek yogurt, protein powder and maple syrup. Whisk very well until smooth.
Line 9 x 5 loaf pan with parchment paper and spread half of the yogurt mixture at the bottom.
Add strawberries, blueberries and raspberries. Then add remaining yogurt mixture, carefully level it with a spatula keeping the sides clean, and tap loaf pan on the counter a few times to help everything to settle.
Freeze for 4 hours or until fully set.
Remove loaf pan from the freezer, then holding onto parchment flaps remove onto a cutting board and let thaw for 2-3 minutes, not longer as bars melt fast.
Using serrated knife cut into 8 bars and enjoy!
Video
Notes
Store: Place bars lined in between with parchment paper pieces to prevent sticking in an airtight container. Freeze for up to 3 months. When ready to enjoy, remove bar on a plate, let thaw for 1-2 minutes and enjoy with a fork. These bars are messy and melt fast.