In a small saucepan over medium heat, combine the mixed berries, maple syrup, and cinnamon.
Simmer the berries for 5-7 minutes, stirring occasionally, until they break down into a thick, syrupy compote.
While the berries simmer, place the egg whites, protein powder, oat flour, almond milk, and vanilla extract in a blender.
Blend on high until the batter is completely smooth and let it rest for 2 minutes.
Heat a non-stick skillet over medium heat and lightly coat with the coconut oil.
Pour a small amount of batter into the center of the pan and swirl immediately to create a very thin, even layer.
Cook for 1-2 minutes until the edges lift easily, then flip and cook for an additional 30 seconds.
Repeat with the remaining batter to make multiple crepes.
Spread the non-fat Greek yogurt inside each crepe, fold or roll them up, and top with the warm berry compote.