Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

Melt ½ cup of unsalted butter and 8 ounces of chopped dark chocolate over low heat, stirring continuously.

In a separate bowl, whisk together 1 cup of all-purpose flour, ¼ cup of cocoa powder, ½ teaspoon of baking powder, and a pinch of salt.

In a large mixing bowl, beat ½ cup of white granulated sugar, ½ cup of light brown sugar, 2 eggs, and 1 teaspoon of vanilla extract until pale and fluffy.

Stir the melted chocolate and butter mixture into the sugar and egg blend.

Fold the dry ingredient mixture into the wet ingredients until just combined.

Scoop the dough onto the prepared baking sheet, leaving about 1.5 inches of space between each mound.

Bake for 11-12 minutes until the tops are cracked and glossy.

Let them cool for about 5 minutes, then sprinkle with flaky sea salt.