Preheat the oven to 350℉. Grease a 9x13-inch baking pan with butter, oil, or solid vegetable shortening.
In a large, microwave-safe bowl, melt the butter. Stir in the brown sugar, flavoring, and pie filling.
½ cup brown sugar, ¾ cup butter, 1 teaspoon almond flavoring, 20 ounce can blueberry pie filling
Cut the biscuits into ⅛s, then stir them into the blueberry mixture.
16 ounce can (or equivalent) jumbo biscuits
Pour the mixture into your prepared pan and smooth out evenly. It should be one layer. Sprinkle the pecans evenly over the top. Sprinkle brown sugar in a thin layer over the top.
¾ to 1 cup pecans
Bake at 350℉ for 45 to 55 minutes or until the top is brown and the blueberry sauce is bubbling.
Glaze
Whisk the powdered sugar and heavy whipping cream together until smooth. Add enough heavy whipping cream so that it's thick but pourable. Drizzle over warm blueberry bubble-up.
1 cup powdered sugar (aka confectioners), 2 o 3 tablespoons heavy whipping cream
Serve warm with vanilla ice cream and/or whipped cream.