Mixed Berry Streusel Pie

INGREDIENTS

frozen ready to bake pie crust {9", 5 oz. size, such as Kroger}

for the berry filling:

2 oz

packages frozen mixed berries {I used Simple Truth Organic brand}

1 tsp

vanilla

1/2 cup

granulated sugar

1/4 cup

all purpose flour

for the streusel topping:

1 cup

all purpose flour, unbleached

1/3 cup

granulated sugar

1/3 cup

brown sugar

1/2 cup

rolled oats

6 tbsp

softened butter

1/4 tsp

salt