Blueberry Sour Cream Pie

FILLING:
1 c. sour cream

3 oz. cream cheese

1 lg. egg

2 pt. blueberries -- don't use more, or it will overflow. I learned this the hard way

3/4 c. brown sugar

1/4 c. flour1 tsp. vanilla

Combine sour cream, cream cheese, egg, brown sugar, flour and vanilla in bowl. Beat thoroughly until smooth. Preheat oven to 450 degrees. Fill pie shell with blueberries. Pour cream mixture over berries. Bake 10 minutes at 450 degrees then reduce heat to 350 degrees and bake for 35 to 40 minutes.

TOPPING:
3/4 c. chopped walnuts

1/2 c. flour

1/3 c. sugar

1/3 c. brown sugar

1 tbsp. cinnamon

1/4 tsp. salt

1/2 c. butter

Combine in blender all ingredients, except butter. Mix and chop fine. Add butter and blend. Distribute evenly to form crumbly mixture. After pie is baked add topping and bake again for 10 to 15 minutes.