In a medium size saucepan over medium heat, cook apples, granulated and brown sugar, apple pie spice and salt. Cook for 15 minutes or just until softened.
Increase heat to medium-high. Add cornstarch dissolved in water stirring constantly until thickened. Repeat 1 Tbsp cornstarch dissolved in water until mixture reaches desired thickeness, Chill for 30 minutes or overnight.
To assemble: Preheat oil to 350-360°F. On a lightly floured surface press or roll each biscuit into a 6 inch round.
Divide apple pie filling among rounds. Fold biscuit dough over forming a crescent. Press edges to seal with a fork.
Fry in batches for 2-3 minutes per side or until golden. Remove with a slotted spoon to a paper towel lined platter to drain,
Serve warm dusted with powdered sugar.