Cream softened butter, sugar, and salt with a electric mixer until light and fluffy, about 5 minutes.
Add eggs, one at a time, and beat after each addition.
Mix in extracts.
Gradually mix in flour.
Reserve 1/3 of the dough.
Spread remaining 2/3s of the batter evenly in a buttered 10x15 rimmed baking sheet.
Spread pie filling evenly over batter.
Drop remaining batter by teaspoonfuls onto pie filling.
Bake approximately 40 minutes or until golden brown.
Remove pan from oven and place on a wire rack. Cool completely.
make the glaze:
Add powdered sugar, melted butter, and extracts to a small bowl. Stir together. Add buttermilk, one tablespoon at a time, until the desired consistency is reached.
Drizzle over bars.