Pumpkin Slab Pie

Bahan-bahan (24 porsi)

• 4 cups (500g) all-purpose flour (spooned & leveled)
• 1 and 1/2 teaspoons salt
• 1 teaspoon granulated sugar
• 1 and 3/4 cup (396g) unsalted butter, very cold and cubed
• 3/4 cup (180ml) very cold ice water
• egg wash: 1 large egg, lightly beaten with 1 Tablespoon (15ml) milk
• 2 (15 ounce) cans pure pumpkin (about 4 cups total; 900g)*
• 2 cups (400g) light or dark brown sugar
• 4 large eggs
• 2 cups (480ml) heavy cream
• 1/4 cup (60ml) whole milk
• 1 teaspoon pure vanilla extract
• 2 Tablespoons cornstarch
• 2 teaspoons ground cinnamon
• 3/4 teaspoon ground ginger
• 1/2 teaspoon ground nutmeg
• 1/2 teaspoon salt
• 1/8 teaspoon fresh ground pepper*
• optional: whipped cream