1 single unbaked 8"-9" pie crust

FILLING:

2/3 c. sugar
1/4 c. flour
1 tsp. cinnamon
3-4 c. apples, peeled & sliced
1/2 c. sour cream

Mix together and put in pie shell.

TOPPING:

1/3 c. flour
1/3 c. brown sugar
1/2 tsp. cinnamon
1/4 c. butter