Classic Buttermilk Sweet Potato Pie Recipe - Recipes by Clare

Ingredients

• 2 medium sweet potatoes.
• 1 refrigerated pie crust.
• 4 tablespoons unsalted butter, melted.
• 1 1/2 tablespoons lemon juice.
• 1/2 teaspoon nutmeg.
• 1/2 teaspoon cinnamon.
• 1/2 teaspoon salt.
• 3 large eggs, separated.
• 1/2 cup granulated sugar.
• 2 tablespoons light brown sugar.
• 2 tablespoons all-purpose flour.
• 3/4 cup buttermilk.