Vanilla Shortbread recipe

[3⁄4 cup + 2tbsp] unsalted butter

[1⁄2 cup + 2tbsp] caster sugar

[2 cups + 2tbsp] gluten free flour (make sure it contains xanthan gum, if not add 2 tsp)

large [2 large] egg yolks

[2 tsp] vanilla extract

optional - confectioner's/icing sugar for dusting after baking

optional - melted chocolate for dipping