Posted by ChelleWRecipe for my butterfly biscuits as requested in comments. Think it is a standard one though - only one I have ever used!
- 200g sugar (or half icing sugar) 2 large eggs 1 tsp vanilla 450g plain flour - sifted 200g unsalted butter ( Though i always use slightly salted baking margarine)
Mix sugar, vanilla and egg. Add flour and butter and mix until just comes together. Knead. Wrap in plastic and chill for 2 hours. Cut out and bake. In my oven 160c for 14-15 mins.