Gluten free Viennesse whirl mince pies

Name: Gluten free Viennesse whirl mince pies
Prep time: 20 min
Cook time: 1 h 45 min
Total time: 1 h 45 min
Yield: 24 pieces
Ingredients: 1 orange; 40 g white sugar; 100 g unsalted butter; 200 g gluten free plain flour; 1 tsp xanthan gum; 1 egg; 20 g cold water; 120 g white sugar; 300 g unsalted butter; 2 tsp natural vanilla extract; 260 g gluten free plain flour; 90 g gluten free cornflour; ¾ tsp gluten free baking powder; ½ tsp xanthan gum; gluten free flour; 250 g fruit mince; icing sugar