Whole Lemon Pie

Ingredients

• 4 large eggs
• 2 tablespoons granulated sugar
• 2 tablespoons (more or less as needed) very cold water
• Powdered sugar for dusting
• 1 teaspoon vanilla extract
• 1 1/2 cups granulated sugar
• 1 whole lemon*
• Lemon slices for garnish
• 1 stick salted butter, chilled and cubed
• 1 stick salted butter, softened
• 1 1/3 cups all-purpose flour