Preheat your oven to 350°F (175°C) and lightly grease a small oven-safe baking dish with a touch of coconut oil.
Place the low-fat cottage cheese into a high-speed blender and process until the texture is completely smooth and creamy.
In a medium mixing bowl, whisk together the blended cottage cheese, liquid egg whites, non-fat Greek yogurt, and mashed banana until well combined.
Add the oat flour, hemp hearts, ground cinnamon, baking powder, vanilla extract, and sea salt to the wet mixture, stirring until no dry clumps remain.
Gently fold the chopped walnuts into the batter to ensure they are evenly distributed.
Pour the batter into the prepared baking dish and smooth the top with a spatula.
Bake for 25 to 30 minutes, or until the center is firm and the top is lightly golden brown.
Remove from the oven and allow the bake to cool in the dish for 5 minutes to let the structure set before slicing.
Serve warm as a complete, high-protein breakfast meal.