- 6 cups fresh marionberries
 - 3/4 cup white sugar
 - 6 tablespoons all-purpose flour
 - 1 tablespoon lemon juice
 - 1 (15 ounce) package pastry for a 9-inch double crust pie
 - 2 teaspoons water, or as needed
 - 2 teaspoons sugar, or to taste
 
- Preheat oven to 450 degrees F (230 degrees C).
 - Mix marionberries, 3/4 cup sugar, flour, and lemon juice together in a large bowl until well-combined.
 - Fit the bottom of a 9-inch pie plate with 1 pie crust. Pour in marionberry mixture. Cover with second crust; crimp edges to seal. Brush pie lightly with water. Sprinkle 2 teaspoons sugar on top. Cut four to eight 1-inch slits in the top crust with a knife.
 - Bake in the preheated oven for 10 minutes. Reduce heat to 350 degrees F (175 degrees C) and continue baking until crust is golden, 45 to 50 minutes more. Let cool completely before serving, about 1 hour.