1½ cup sugar, divided
1/3 + ½ cup all purpose flour
½ cup sour cream
¼ cup butter, softened but not melted
½ recipe Foolproof Pie Dough
Preheat oven to 350°.
Mix together 1 cup sugar, 1/3 cup flour, 2 eggs and sour cream. Add blueberries and blend well.
Roll out Foolproof Pie Dough and lay into pie dish. Pour blueberry mixture into crust.
In a separate bowl, blend butter, ½ cup sugar and ½ cup flour until crumbly. Scatter over pie filling.
Place pie dish on a baking sheet to catch drips and bake for 1 hour.