Prepare pie crust
Create pecan praline layer by combining pecans, sour cream, butter, and sugar
Bake pecan layer until crunchy and chewy
Prepare custard filling and pour over pecan layer
Bake until custard is set and forms a thick, creamy layer
Allow pie to cool completely
Whip cream with sour cream to stabilize
Top pie with sour cream whipped cream topping
Serve chilled
