Cinnamon Custard Pie

INGREDIENTS

• 1 medium disk Pate Brisee
• All-purpose flour, for surface
• 2 cups heavy cream
• 2 cups milk
• 1 vanilla bean, split and scraped, pod reserved
• 2 whole cinnamon sticks
• 1/8 teaspoon ground cinnamon, plus more for dusting
• 12 large egg yolks, room temperature
• 1/2 cup sugar
• 2 teaspoons arrowroot or cornstarch