Preheat your oven to 350°F and get two baking sheets ready with parchment paper.

In a microwave-safe bowl, melt 1 cup of chocolate chips with the butter, stirring every 30 seconds until smooth. Let it cool.

In another bowl, whisk together the flour, cocoa powder, baking powder, and salt. Set aside.

In a large mixing bowl, beat the eggs, granulated sugar, brown sugar, and vanilla extract on medium-high speed for about 5 minutes.

Lower the speed and mix in the melted chocolate for 1 minute.

Add the flour mixture and mix on low speed until just combined, around 20 seconds.

Fold in the remaining 1/2 cup of chocolate chips. The dough will be like a gooey brownie batter.

Using a medium cookie scoop lightly coated with nonstick spray, drop the dough onto the baking sheets, spacing them 3 inches apart as they will spread.

Bake for 14 minutes, until the tops look shiny and crackly.

Once baked, remove from the oven and sprinkle with flaky salt if you like. Let the cookies cool on the baking sheets for 5-10 minutes before transferring to a wire rack to cool completely.