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A Slice of Pumpkin Mousse Pie on a Dessert Spatula

Pumpkin Mousse Pie

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  • Author: Shelly
  • Prep Time: 10 minutes
  • Cook Time: 15 minutes
  • Total Time: 4 hours 25 minutes
  • Yield: 10 1x
  • Category: Dessert
  • Method: Oven
  • Cuisine: American


This light and fluffy Pumpkin Mousse Pie is easy to make with a homemade crust and a whipped topping. It’s full of pumpkin and warm spices!



For the Crust

  • 1 1/2 cups finely ground gingersnap cookie crumbs
  • 1/4 cup light brown sugar
  • 5 tablespoons butter, melted

For the Pumpkin Mousse Filling

  • 1 tablespoon butter
  • 30 regular-sized marshmallows (not mini)
  • 1 teaspoon pumpkin pie spice
  • 1/2 teaspoon kosher salt
  • 1 (15-oz) can pumpkin puree
  • 1 (8-oz) container frozen whipped topping (like Cool Whip), thawed


  • Whipped cream or more Cool Whip to top


For the Crust

  1. Preheat the oven to 350°F.
  2. In a large bowl, evenly combine the cookie crumbs, sugar and butter.
  3. Press the cookie mixture firmly into the bottom and up the sides of an ungreased, 9-inch deep dish pie plate.
  4. Bake for 9-10 minutes until edges are lightly golden. Allow the crust to cool completely.

For the Filling

  1. Heat a large saucepan on low heat. Melt the butter and add in the marshmallows. Stir constantly until the marshmallows are melted.
  2. Remove the pan from the heat and stir in the pumpkin pie spice, salt and pumpkin puree until evenly combined. Allow the mixture to cool to room temperature.
  3. Fold in the whipped topping until smooth. Spread the mixture into the crust. Cover with plastic wrap and refrigerate for 4 hours or overnight.
  4. Top with whipped cream or Cool Whip, if desired.

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