Preheat oven to 375 degrees. Line a baking sheet with nonstick foil.

In a medium bowl, mix together the flour, cocoa powder, baking powder, baking soda and salt. Set aside.

In a large mixing bowl or the bowl of a stand mixer, beat the cottage cheese for about a minute. Add the butter and both sugars and beat for another 2 minutes. Reduce mixer speed to low and add egg and vanilla, beating just until mixed.

With a mixing spoon (or using the lowest speed of a stander mixer fixed with a paddle), gradually add the flour mixture to the butter mixture and stir until incorporated. Stir in the chocolate chips.

Using a tablespoon measure, scoop up dough and arrange balls of dough (they'll be sticky -- not perfectly round) on the baking sheet about 2 inches apart. Bake on center rack for 10 minutes or until cookies appear set. Transfer to a wire rack to cool. After about 5 minutes or when the cookies are warm rather than very hot, sift some powdered sugar over them. This covers up the little flecks of cottage cheese.