Preheat oven to 350°F (175°C) and grease a 8x8 inch baking dish.
In a blender or food processor, combine cottage cheese, eggs, oats, maple syrup, vanilla extract, baking powder, and salt.
Process until the mixture is smooth and well combined.
Pour the batter into the prepared baking dish.
Gently fold in half of the blueberries and sprinkle the remaining blueberries and lemon zest on top.
Bake for 35 to 40 minutes, or until the center is set and the edges are lightly golden brown.
Allow to cool for 5 to 10 minutes before slicing and serving.