Blueberry Crumble Pie

INGREDIENTS

and 1/2 cups (800g) fresh blueberries*

1/2 cup

granulated sugar

1/3 cup

all-purpose flour

1 tbsp

cornstarch

1 tbsp

lemon juice

2 tsp

lemon zest

1/2 cup

packed light or dark brown sugar

6 tbsp

all-purpose flour

1 tsp

ground cinnamon

6 tbsp

unsalted butter, very cold and cubed

2/3 cup

old-fashioned whole rolled oats

pastry blender, rolling pin, pie dish, pie crust shield