Brown Sugar Sweet Potato Pie

Bahan-bahan (9 porsi)

• 1 unbaked Flaky Pie Crust (what I used) or All Butter Pie Crust*
• egg wash: 1 large egg beaten with 1 Tablespoon (15ml) milk or heavy cream
• 1 lb sweet potatoes (about 2 medium)
• 6 Tablespoons (85g) unsalted butter, softened to room temperature
• 1 cup (200g) packed light or dark brown sugar (I prefer dark)
• 1/2 (120ml) cup heavy cream
• 2 large eggs
• 2 Tablespoons (15g) all-purpose flour
• 1 teaspoon pure vanilla extract
• 1 teaspoon ground cinnamon
• 1/2 teaspoon ground nutmeg
• 1/4 teaspoon ground cloves
• 1/4 teaspoon ground ginger
• 1/8 teaspoon salt
• optional for serving: whipped cream