These fudgy brownie cookies have shiny, crackly tops, crisp edges, and soft, gooey centers. They taste just like a brownie and are ready in 30 minutes, with no chilling.
Prep: Preheat your oven to 180°C (350°F) and line a baking sheet with parchment paper. Have everything ready before you start, since the batter needs to go into the oven as soon as it is mixed.
Dry Ingredients: In a medium bowl, whisk together the flour, cocoa powder, and baking powder.
Melt: Melt the butter and dark chocolate together in the microwave in short bursts, or over a pot of simmering water, stirring until smooth. Keep it warm; there is no need to let it cool.
Mix the batter
Whip the Eggs: In a large bowl, beat the eggs, salt, brown sugar, and granulated sugar with an electric hand mixer for exactly 4 minutes, until pale, thick, and almost doubled in volume.
Add the Chocolate: Pour in the warm chocolate mixture and beat for about 30 seconds, just until combined.
Fold in the Dry Ingredients: Sift the dry ingredients into the bowl and mix only until no streaks of flour remain.
Scoop and bake
Scoop Right Away: Immediately scoop the batter onto the baking sheet, leaving about 7.5 cm (3 inches) between each cookie.
Bake: Bake for 10 to 12 minutes, until the tops are shiny and crackled and the edges are set.
Cool: Let the cookies rest on the baking sheet for 5 minutes, then move them to a wire rack. Sprinkle with flaky salt if you like.
Notes
Don't Rest the Batter: Scoop and bake immediately after mixing. Batter that sits loses its shiny, crackly top.
Bake Both Trays Together: Scoop all the batter at once and bake both trays on the upper and lower middle racks, swapping halfway.
Chocolate: Use a chopped dark chocolate bar with 60 to 70% cocoa for the best texture.
Bigger or Smaller Cookies: 1 tablespoon scoops bake in 8 to 9 minutes; 3 tablespoon scoops bake in 13 to 15 minutes.
Storage: Keep in an airtight container at room temperature for up to 5 days. Avoid the fridge, which makes them hard.