Makes 8 servings.
For pie: Position rack in bottom third of oven and preheat oven to 350°F. Whisk pumpkin, maple syrup, whipping cream, eggs, butter, cinnamon, nutmeg, cloves and salt in large bowl to blend well.
Pour pumpkin mixture into prepared pie crust. Bake until filling is just set in center and crust is golden, about 1 hour. Transfer pie to rack and cool completely. Cover pie and refrigerate until cold. (Can be prepared 1 day ahead. Keep refrigerated.)
For whipped cream: Using electric mixer, beat 1 cup chilled whipping cream, 3 tablespoons powdered sugar, 1 teaspoon ground cinnamon and 1 teaspoon vanilla extract in large bowl until soft peaks form.
Serve pie cold or at room temperature with whipped cream.