01 - Preheat the oven to 375°F. Line a baking sheet with parchment paper or lightly grease a 24-cup mini muffin tin with cooking spray.
02 - Roll out the pie dough on a lightly floured surface. Using a 2.5-inch round cutter, cut out 24 circles from the dough sheets.
03 - Gently press each dough circle into the cups of the mini muffin tin, creating small pie shells. Alternatively, arrange circles on the prepared baking sheet and shape into cups.
04 - Spoon approximately 1 teaspoon of cherry pie filling into each prepared crust cup, being careful not to overfill.
05 - In a small bowl, combine the granulated sugar and ground cinnamon if using. Mix until thoroughly blended.
06 - Brush the edges of each pie bite with melted butter using a pastry brush. Sprinkle the cinnamon sugar mixture evenly over the buttered edges.
07 - Bake for 13 to 15 minutes or until the crust turns golden brown and the cherry filling is bubbling. Watch closely to prevent over-browning.
08 - Let the pie bites cool in the tin for 5 minutes before carefully removing. Serve warm or at room temperature.