Preheat oven to 450°F. Bake pie crust on parchment for 10 minutes.
Cool and break into pieces.
In saucepan, combine zest, juice, sugar, and eggs.
Add milk, vanilla, and salt. Cook over medium heat until it simmers.
Strain custard into bowl. Cover with plastic wrap directly on surface. Chill until cold.
Stir in whipping cream. Churn in ice cream maker per manufacturer’s instructions.
Fold in pie crust pieces and blueberry filling. Freeze until firm.
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