Ingredients:
250g plain four
1/2 tsp baking powder
150g caster sugar
1 egg
3 egg yolks
150g slightly-salted butter, softened and diced
Method:
Sift together the four and baking powder into a bowl then add the sugar and mix thoroughly to combine. Form a well in the centre then add the egg, 2 egg yolks. Blend gradually, incorporating the softened butter a little at a time. Roll into a ball then cover with clingfilm and set aside to rest for 1 hour.
Cover a baking tray with baking paper then turn the dough out onto a lightly-floured work surface. Roll out to about 2.5mm thick then use a 7cm diameter pastry cutter to cut the dough into rounds. Using a fork draw hatches on the surface of the galettes then arrange on your baking tray. Brush with the remaining egg yolk then transfer to an oven pre-heated to 200°C and bake for about 15 minutes, or until golden brown and cooked through. Allow to cool before serving.