HEAT oven to 425 degrees F. Whisk together pumpkin, sweetened condensed milk, egg, 3/4 teaspoon cinnamon, ginger, nutmeg and salt in large bowl. Pour into crust.
BAKE 15 minutes. While pie is baking, combine brown sugar, flour and remaining 1/2 teaspoon cinnamon in small bowl; cut in butter with pastry blender or 2 knives until mixture resembles coarse crumbs. Stir in nuts.
REMOVE pie from oven; reduce oven to 350 degrees F. Sprinkle streusel mixture over pie.
BAKE 40 minutes or until set. Cool. Serve warm or at room temperature. Top with whipped cream, if desired.
Courtesy of Eagle Brand®