Begin by preheating your waffle iron according to the manufacturer's instructions, ensuring it's ready for cooking.
In a large mixing bowl, add the thoroughly mashed banana. Use a fork or a potato masher to ensure it's smooth.
Incorporate the rolled oats, cottage cheese, and eggs into the bowl. Blend these ingredients together until they form a unified mixture, ensuring there are no visible lumps.
Introduce the protein powder, baking powder, vanilla extract, and a pinch of salt to the mixture. Stir vigorously until the batter is smooth, ensuring that all dry ingredients are well mixed in.
Carefully fold in the blueberries, taking care to maintain their integrity and prevent crushing. This will ensure delightful bursts of flavor in every bite.
Lightly grease the preheated waffle iron using non-stick cooking spray or a small brush of oil to prevent sticking.
Pour an appropriate amount of the prepared batter onto the preheated waffle iron, generally around 1/2 to 3/4 cup, depending on your waffle maker's size.
Close the waffle iron and cook the batter according to the manufacturer’s suggested time, typically around 3-5 minutes, or until the waffles are golden brown and crispy.
Carefully remove the cooked waffles from the iron. Serve immediately or keep warm while you use the remaining batter.
Notes
Serve warm with fresh blueberries and a drizzle of maple syrup or honey.