Streusel Pumpkin Pie

1 (9-inch) unbaked pastry shell
1 (16oz) can pumpkin (about 2 cups)
1 (140z) can Sweetened Condensed Milk
2 Eggs
1 tsp. ground cinnamon
1/2 tsp. ground ginger
1/2 tsp. ground nutmeg
1/2 tsp. salt

Topping: In medium bowl, combine 1/2 cup firmly packed light brown sugar and 1/2 cup flour; cut in 1/4 cup cold butter until crumbly. Stir in 1/4 cup chopped nuts. After 30 minutes of baking at 350, sprinkle on top of pie; bake 20 minutes longer or until golden.

Preheat oven to 425. In large mixer bowl, combine all ingredients except pastry shell; mix well. Pour into pastry shell. Bake 15 minutes. Reduce oven temperature to 350; bake 35 to 40 minutes longer or until knife inserted 1 inch from edge comes out clean. Cool.