Preheat oven to 350°F (175°C) and line an 8x8 inch baking pan with parchment paper.
Place cottage cheese in a high-speed blender and process until completely smooth and liquid.
Add eggs, maple syrup, and vanilla extract to the blender and pulse until combined.
In a medium mixing bowl, whisk together the cocoa powder, oat flour, protein powder, baking powder, and salt.
Pour the wet cottage cheese mixture into the dry ingredients and stir until a uniform batter forms.
Fold in half of the chocolate chips.
Transfer the batter to the prepared baking pan and smooth the top with a spatula.
Sprinkle the remaining chocolate chips over the surface.
Bake for 22 to 25 minutes, or until the edges are firm and a toothpick inserted into the center comes out with only a few moist crumbs.
Allow the brownies to cool completely in the pan for at least 30 minutes to allow the protein structure to set before slicing.