Prepare the Batter: In a bowl, whisk together oat flour, maple syrup (or honey), egg, and egg whites until smooth with no lumps.
Cook the Crepes: Heat a non-stick skillet or crepe pan over medium heat with a little oil or butter. Pour about 1/3 cup of batter into the pan, swirling to spread evenly. Cook for 1–2 minutes, flip, then cook for another 30–60 seconds. Repeat with remaining batter.
Make the Cinnamon Yogurt Filling: In a small bowl, combine Greek yogurt, erythritol, and cinnamon. Add a splash of milk if needed to create a spreadable consistency.
Fill and Roll: Spread the yogurt filling evenly over each crepe. Roll up each crepe into a log shape.
Top with Sugar-Free Cinnamon Sugar: Mix the sweetener and cinnamon in a small bowl. Sprinkle over the crepes before serving.
Serve: Serve warm and enjoy immediately. Optionally garnish with fruit, nuts, or a drizzle of maple syrup.