Preheat oven to 350 degrees F and line an 8×8 baking dish with parchment paper. In a food processor or high-speed blender (I use ninja kitchen or vitamix), combine eggs, cottage cheese, and vanilla until smooth. Pour in melted chocolate and puree again until combined.

Whisk together flour, baking powder, sweetener, and cocoa in a medium mixing bowl. Pour cottage cheese mixture into dry ingredients and stir until just combined.

Pour batter into the prepared baking dish and bake for 20-25 minutes (or until a knife comes out cleanly from the center of the pan. Let the pan cool completely on a wire rack before slicing into 9 brownies.