01 -
Preheat oven to 350°F (175°C). Place the butter in a 9×9-inch baking dish and melt it in the preheating oven.
02 -
In a mixing bowl, combine flour, sugar, baking powder, and salt. Stir in buttermilk, vanilla extract, and lemon extract (if using) until a smooth batter forms.
03 -
Pour the batter evenly over the melted butter in the baking dish. Do not stir. Spoon the lemon pie filling or curd evenly over the batter.
04 -
Bake for 45-55 minutes until the top is golden brown and the edges are bubbling.
05 -
Allow to cool slightly before serving warm. Optionally top with whipped cream, ice cream, or fresh berries.