Pastry

• 2 1/2 cups (about 10 5/8 ounces) all-purpose flour, plus more for work surface
• 1 cup (8 ounces) cold unsalted butter, cut into 1/4-inch pieces
• 1/2 cup granulated sugar
• 1/2 cup powdered sugar
• 1 large egg
• 1 large egg yolk, beaten

Custard

• 1 1/3 cups heavy whipping cream
• 3/4 cup packed light brown sugar
• 2 tablespoons white miso paste
• 1/3 cup canned pumpkin
• 1 large egg
• 1 large egg yolk