Tuiles or Biscuit Cups

• 45 g/ 1½ oz unsalted butter, plus more for greasing
• 250 g/ 8½ <

Melt the butter in a pan over a low heat. Mix the caster sugar and flour in a bowl. Add the egg whites and the melted butter and stir to a smooth mixture. Allow to rest for 2 hours.

Preheat the oven to 160°C/325°F/ gas 3 and butter a baking sheet. Using a fork dipped in cold wa