Step 1: Preheat your oven to 350°F (175°C) to ensure even baking.
Step 2: If using a store-bought pie crust, place it in your pie dish as per package instructions. For homemade, roll it out and fit it into the dish.
Step 3: Melt the butter in a medium bowl and let it cool slightly.
Step 4: In a large mixing bowl, whisk together the melted butter, eggs, and granulated sugar until well combined.
Step 5: Stir in the cornmeal, flour, and salt until there are no lumps.
Step 6: Add the milk, vinegar, and vanilla extract, stirring until well combined.
Step 7: Carefully pour the filling into the prepared pie crust.
Step 8: Bake for 40-45 minutes, or until set and the top is lightly golden.
Step 9: Allow to cool for at least an hour before slicing. Serve as is or with whipped cream.