Preheat your oven to 350°F (175°C).
Roll out the pie crust and use a round cutter or glass to cut out circles that fit into a mini muffin tin. Grease the tin and place each round of dough into the cups.
In a large bowl, whisk together the pumpkin puree, sugar, cinnamon, ginger, nutmeg, eggs, and evaporated milk until smooth.
Pour the pumpkin filling into each lined muffin tin, filling them about ¾ full.
Place the muffin tin in the preheated oven and bake for 20-25 minutes, or until the filling is set.
Allow the mini pies to cool for 10 minutes before removing them from the tin. Let them cool completely on a wire rack.
Top with whipped cream or a sprinkle of cinnamon before serving, if desired.