Preheat oven to 350°F. Grease an 8x8-inch baking dish with cooking spray or line with parchment paper.
In a blender or food processor, combine cottage cheese, eggs, maple syrup, vanilla, oat flour, baking powder, cinnamon and salt. Blend until smooth.
Stir in the blueberries.
Transfer batter to the prepared baking dish. Top with extra blueberries.
Bake for 35–40 minutes, until the top is golden and the center is set. A toothpick should come out mostly clean.
Portion and serve with a drizzle of maple syrup if desired.
