100g cold butter, diced (or margarine for a lactose-free option)
50g of powdered sugar (or icing sugar for more finesse)
1pinch of salt
Preparation
Make the shortcrust pastry: In a bowl, mix the gluten-free flour, sugar and a pinch of salt. Add the cold diced butter and mix with your fingertips until you obtain a sandy texture. Press the dough evenly into the bottom of the pan.
Leave the dough to rest in its mold in the fridge for 30 minutes.
Bake: In an oven preheated to 180 degrees, bake for about 20 minutes, or until the biscuit is golden brown.