Preheat oven to 180C and line a baking tray with a silicon mat or baking paper.
Combine all the ingredients in bowl and whisk together well. Divide the mixture into 6 large spoonfuls onto the silicon mat and using the back of the spoon, spread the mixture out into a thin disc about 14cm in diameter.
Sprinkle with almond flakes. Bake until golden, about 8 minutes. Remove from the oven and allow to cool.
Sprinkle cookies with sifted icing sugar to serve.