Ingredients

1 9" pie crust

Filling:
1 1/4 C. sour cream
1 C. sugar
3 Tbs. flour
1/4 tsp. salt
1 1/4 tsp. vanilla
4 C. thin sliced tart apples
1 egg, beaten

Crumbs:
1/4 C. cold butter
1/3 C. flour
1/3 C. brown sugar

Directions

Blend crumb ingredients together and set aside. Combine sour cream, sugar, flour, salt and vanilla. Add apples and beaten egg. Bake in shell for 25 minutes at 400 degrees. Remove from oven, add crumbs. Return to oven for 20 minutes. Cool and refrigerate. Serve when cold.