Preheat oven to to 325 °F. Lightly coat a 9- x 9-inch baking pan with baking spray. Line the baking pan with two pieces of parchment paper placed perpendicular to each other, covering all four sides and leaving a 2-inch overhang. If desired, use binder clips to keep the parchment paper away from the curd while baking. Just clip them to the sides of the pan. Set aside.