Preheat your oven to 350°F (175°C) and position a rack in the middle. Line an 8×8 inch baking pan with parchment paper, leaving 2-inch overhang on two opposite sides.

Add the cottage cheese, eggs, granulated sugar, and vanilla extract to a high-speed blender. Blend on high for 30-60 seconds until smooth.

Add the cocoa powder, baking powder, and salt to the blender. Pulse just until combined, about 10-15 seconds.

Remove the blender jar and gently stir in the chocolate chips by hand using a spatula.

Pour the brownie batter into the prepared pan and smooth the top with a spatula. Sprinkle additional chocolate chips on top if desired.

Bake for 20-25 minutes until the edges are set but the center looks slightly underdone. A toothpick inserted should come out with a few moist chocolate crumbs.

Let the brownies cool completely in the pan for at least 30 minutes. For clean cuts, refrigerate for 1 hour before slicing into 16 squares.