Viennese whirl mince pies

Pastry

• 1 orange, peel only
• 50 g white sugar
• 120 g unsalted butter, chilled and cut into pieces
• 240 g plain flour, plus extra to dust
• 1 egg

Topping

• 125 g white sugar
• 250 g unsalted butter, softened and cut into pieces
• 1 - 2 drops natural vanilla extract
• 250 g plain flour

Assembly and baking

• 250 g fruit mince (see Tips)
• icing sugar, to dust