1heat oven to 425 place pie crust in a 9 inch glass plate as directed on a box for one- crust Filled Pie Crust. In a large Bowl, beat filling ingredients with electric mixer on medium speed un till smooth. Pour in to crust-lined pan. Bake for 10 minutes
2mean while in a small bowl, mix 1/4 cup brown sugar the chopped walnuts and flour, cut in butter until crumbly and set aside.
3reduce oven temperature to 350 sprinkle streusel over pie. Cover crust edge with 3-inch wide strips of foil to prevent excessive browning.
4Bake 30 to 35 minutes or until knife inserted 1 inch from the edge comes out clean. Cool completely about two hours. Serve or refrigerate until serving time.
5To serve, in a medium bowl beat whipping cream and 2 TABLE Spoons brown sugar with electric mixer on medium- high speed until soft peaks form. Serve pie with whipped cream; garnish with chopped walnuts. Store in refrigerator.