Blend bananas, eggs, cottage cheese, and vanilla extract in a high speed blender or with an immersion blender until smooth - make sure the cottage cheese is completely blended in. Pour liquid ingredients into a large mixing bowl.
In a small bowl whisk together all purpose flour, sugar, baking powder and baking soda. Pour dry ingredients into wet and mix with a flat spatula.
Pour batter into prepared loaf pan. Bake at 350F for 55 minutes - lightly cover top with a piece of aluminum foil when there are 20 minutes left to prevent top from getting too brown.
Allow to cool completely before removing from the pan and cutting into slices
Notes
Use 1:1 gluten free flour blend to make this gluten free
You can use a higher fat cottage cheese
Add greek yogurt or peanut butter as a topping for even more protein