Pre-heat oven to 180°C/Gas Mark 4. Line the base of a 21cm square tin with baking parchment.
2
Step 2
Put the cocoa powder, butter and sugar in a large saucepan and gently melt, stirring so the mixture doesn't catch.
3
Step 3
When the cocoa mixture is melted and combined, cool slightly, then stir in the eggs, little by little, followed by the flour and coconut.
4
Step 4
Tip into the tin and bake for 45 minutes in the middle of the oven. Check after 30 minutes and cover with another piece of baking parchment if the crust is browning too much.
5
Step 5
Cool in the tin, then carefully lift out and cut into squares.