Preheat the oven to 425°F.
Combine the cherries, sugar, cornstarch, lemon zest, lemon juice and vanilla extract in a saucepan set over medium-low heat. Cook, stirring, until the cherries have softened and the mixture is syrupy, 8 to 10 minutes. Remove the cherry pie filling from the heat and set it aside.
Lightly flour your work surface then unroll three of the pie crusts. (You will have one extra pie crust, which can be refrigerated and saved.) Using a 4-inch cookie cutter (or tracing around a 4-inch glass), cut out 4 circles from each round. Transfer each of the rounds to a muffin tin cup, pressing it down in the center and up along the edges to fill each cup.
Divide the cherry filling among the cups.