Preheat the oven to 350 degrees.

Line a baking sheet with parchment paper.

Sift together the flour, cocoa, baking powder, and salt. Keep aside.

Cream butter and sugars until well mixed. Beat in the egg and vanilla.

On low speed, beat in flour mixture a little at a time, until well blended and smooth.

Drop chocolate cookie dough onto your parchment lined baking sheets by rounded tablespoons, about 2 inches apart.

Bake for about 12-13 mins until they are barely set.Don't over bake.

Cool pan on rack for about 5 minutes.

Transfer chocolate cookies to rack to cool completely. Enjoy!