French King Cake with Nuts (Galette des Rois)

Ingredients

• • 1/3 cup (45 g) blanched hazelnuts
  • 1/3 cup (45 g) shelled pistachios
  • 1 cup (130 g) ground almonds
  • 1 cup (130 g) icing sugar
  • 3/4 cup (170 g) unsalted butter, softened
  • 3 eggs 

  • 1/3 cup (75 ml) 35% cream
  • 400 g puff pastry
  • 1 dried bean
  • 1 egg, lightly beaten
  • 1 tbsp coarse sugar (turbinado, raw cane sugar, Demerara)