Heat oven to 375°F. Spray 2 cookie sheets with nonstick cooking spray. In small bowl, combine sugar and cinnamon. Set aside.
Separate dough into 8 biscuits. Press or roll each to form 5-inch round. Place on sprayed cookie sheets.
Place 2 tablespoons pie filling slightly off center on each biscuit round on one cookie sheet. Fold biscuits over filling; press edges with fork to seal. Prick top of each 3 times with fork. Brush each with melted butter; sprinkle with sugar mixture
Bake at 375°F. for 15 to 20 minutes or until deep golden brown. (Some filling may bubble out at edges.) Repeat with biscuit rounds on second cookie sheet. Immediately remove from cookie sheets. Cool 5 minutes before serving. Serve warm