Add the gluten-free oats, cottage cheese, eggs, baking powder and vanilla to a blender and blend on high for 45 to 60 seconds until smooth.
Rest the batter for 5 minutes so the oats absorb liquid and it thickens.
Heat a large non-stick skillet over medium-low heat for 2 minutes and coat lightly with cooking spray.
Pour about 3 tbsp of batter per pancake and dot each with a few blueberries. Cook for about 2 minutes until bubbles appear and the edges set, then flip and cook 1 to 2 minutes more until golden and springy. Repeat, spraying the pan between batches.
Serve the stack warm with the rest of the blueberries and the maple syrup.