01 -
Preheat the oven to 175°C. Lightly grease a small loaf pan or two single-serving ramekins.
02 -
In a blender or mixing bowl, combine oats, egg whites, 160 ml water, vanilla protein powder, 1 teaspoon sweetener, and baking powder. Blend or stir until the mixture is completely smooth.
03 -
In a separate small bowl, mix ground cinnamon, 15 ml water, and 1 teaspoon sweetener if desired, creating a smooth cinnamon paste.
04 -
Pour half the batter into the prepared pan(s). Drizzle half of the cinnamon mixture over the batter and gently swirl with a knife or skewer for a marbled effect.
05 -
Pour the remaining batter over and top with the remaining cinnamon swirl. Swirl again gently to create a visible pattern.
06 -
Bake for 12 to 15 minutes, or until the cake is set and a toothpick inserted into the center comes out clean.
07 -
Allow to cool for a few minutes before serving. Serve warm for best texture.