01 -
Preheat the oven to 350 degrees Fahrenheit. In a large mixing bowl, stir together granulated sugar and all-purpose flour until evenly blended.
02 -
Add buttermilk, melted salted butter, large eggs, fresh squeezed lemon juice, and vanilla extract to the dry mixture. Whisk thoroughly until smooth and homogenous.
03 -
Pour the prepared filling into the 9-inch deep dish pie crust placed on a sheet tray to catch any drips or spillage.
04 -
Bake for 55 to 70 minutes until the top is golden brown and the filling has puffed but remains slightly jiggly in the center. If browning accelerates excessively, tent the pie with foil.
05 -
Allow the pie to cool at room temperature for a minimum of 3 hours prior to serving. Optionally refrigerate if a chilled pie is preferred.