Step 1

Preheat the oven to 180 C (160 C fan). Line the baking trays with baking paper and set aside.

Step 2

Add chopped chocolate and cubed butter into a medium heatproof bowl and place it over a saucepan of gently simmering water. Stirring occasionally, allow the chocolate and butter to melt completely. Remove the bowl from the top of the saucepan and set it aside.

Step 3

Place both sugars, eggs and vanilla extract in a bowl of an electric mixer (or freestanding mixer fitted with the whisk attachment), and beat on medium- high speed for 5 minutes exactly. The mixture will become pale and fluffy and shiny. Slowly pour the melted chocolate and butter into the eggs mixture, and beat on medium- low until incorporated, about a minute.

Step 4

Sift the flour, cocoa, baking powder and salt into a large bowl. Add dry ingredients mix into the egg and chocolate mixture and stir together until just combined. Use a spatula to scrape the sides and the bottom of the bowl to make sure all ingredients are mixed together.

Step 5

Using the cookie/ ice cream scoop, form the cookies, releasing the cookie batter just above the baking tray to avoid any spills. Make sure to leave plenty of room between each cookie, as they will spread during baking. Sprinkle the cookies with flaked sea salt and place them in the oven.

Step 6

Bake the cookies for 12 minutes. Remove from the oven and allow them to cool for at least 20 minutes, before removing them into a cooling rack. Enjoy!