240 grams cocoa powder
185 grams flour
1/2 baking powder
375 grams butter
300 grams caster sugar
165 grams light brown sugar
2 large eggs
2 egg yolks
1 teaspoon vanilla extract
250 grams icing sugar
75 grams softened butter
20 milliliters milk
Cream together the butter, two types of sugars, vanilla extract and salt.
Add in the eggs and egg yolks. Then sift in the dry ingredients (flour, cocoa powder and baking powder) and mix.
Grease two fluted tart tins and put the mixture in evenly between the two.
Place in a preheated oven at 165C and cook for 25-30 minutes and leave to cool.
Make the frosting by mixing the icing sugar, butter, milk and vanilla together in a mixer.
Sandwich the cookies together with the frosting.
Decorate the top with chocolate piping.
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