Blackberry Pie - cooking recipe

Ingredients

1 c. sour cream
2 Tbsp. plain flour
3/4 c. sugar
1 tsp. vanilla
1/4 tsp. salt
1 egg, beaten
2 1/2 c. blackberries *
1 unbaked 9-inch pastry shell
3 Tbsp. plain flour
3 Tbsp. butter, softened
3 Tbsp. chopped pecans or walnuts

Preparation

Combine first 6 ingredients; beat 5 minutes at medium speed or until smooth.
Fold in blackberries.
Pour filling into pastry shell; bake at 400\u00b0 for 25 minutes.