01 -
Preheat the oven to 350°F (177°C). Line a baking sheet with parchment paper.
02 -
Melt the unsalted butter and semi-sweet chocolate chips together until smooth. Let the mixture cool slightly.
03 -
In a large bowl, whisk together the granulated sugar, brown sugar, eggs, and vanilla extract. Add the cooled chocolate mixture and stir to combine. Sift in the all-purpose flour, cocoa powder, baking powder, and salt. Fold the mixture until fully combined.
04 -
Chill the dough for 15 minutes in the refrigerator. Form the dough into balls, insert extra chocolate chips into the center of each, and place them on the prepared baking sheet.
05 -
Bake the cookies for 10-12 minutes, or until the tops are glossy and cracked. Allow the cookies to cool on the baking sheet for 5 minutes, then transfer them to a wire rack to cool completely.