Halloween Bakewell tart

Name: Halloween Bakewell tart
Ingredients: 200 g plain flour, plus extra to dust; 25 g icing sugar; 100 g unsalted butter, chilled and chopped; 1 medium egg; 1 tsp. vanilla bean paste; 200 g cooked pumpkin purée, we used Libby's; 1 tsp. ground cinnamon; 1 tsp. ground mixed spice; 1 tsp. ground ginger; 2 tbsp. icing sugar; 2 tbsp. milk; 125 g unsalted butter, softened; 125 g caster sugar; 2 medium eggs, beaten; 40 g plain flour; 125 g ground almonds; 300 g icing sugar; black food colouring paste; orange food colouring paste