Preheat oven to 425 degrees. Lightly grease the Mason jars and place them on a rimmed baking sheet. Fill jars about 3/4 full of pie filling.

Unroll pie crust onto a lightly floured surface. Use the ring from the Mason jar lid to cut 10 circles from the crust.

Gently press each circle over the pie filling in the jar, pressing the edges of the crust against the edges of the jar.

Bake for 15-17 minutes, or until crust is golden brown.

Note: Pies may bubble up and over a bit during baking, but then settle back into the jars as they cool.