Gluten-free Rough Almond Cakes

Put the butter and sugar and egg white in a mixer or food processor and beat

Add the flours, lemon zest and salt, and blend

With the help of cling film, form a roll and chill for 15 minutes

Cut into rounds and form to your liking

Place on a tray lined with greaseproof paper, brush with egg yolk and scatter with matchstick almonds