Frozen Strawberry Parfait Sandwiches

Ingredients

• Lemon Butter Cookies

  • 1 cup (140 g) unbleached all-purpose flour
  • ½ tsp baking powder
  • ½ cup (115 g) unsalted butter, softened
  • ½ cup (105 g) sugar
  • 1 egg yolk
  • 1 lemon, the finely grated zest

• Strawberry Parfait

  • ¾ cup (160 g) sugar
  • 2 tbsp cornstarch
  • 2 eggs
  • 1 cup (250 ml) strawberry purée (see note)
  • 2 tbsp (30 ml) lemon juice
  • 1 cup (250 ml) 35% whipping cream