Preheat the oven to 350°F/180°C.
Get out and measure all of your ingredients.
Line a brownie tin or a small roasting tin 5.5 x 8 inches (14 x 20cm) with parchment and/or cooking spray.
Using a microwave safe bowl melt the dark chocolate and the butter in 20 second bursts, stirring in between each until melted. Your other option is to melt them together over a low heat. Stir frequently.
Chocolate and butter must be meted.
In another bowl, whisk together the sugar and the eggs.
Add the mixture to the melted butter/chocolate. Add also the flour.
Stir.
Until you achieve a smooth batter.
Pour the batter into the prepared tin.
Bake for 15-18 minutes or until lightly crusty on the top but still a soft center. Don’t over-bake the brownie. It will help to mix the brownie later and reach the right consistency for the filling.
Let it cool completely in the tin.