This easy 3 ingredient pumpkin mousse folds caramelized sweetened condensed milk and spiced pumpkin into fluffy whipped cream. It's a light, creamy, make-ahead fall dessert that needs no baking.
Optional, roast the pumpkin: Heat the oven to 400°F. Spread the pumpkin puree on a greased baking sheet and roast for 20–30 minutes, until firmer and darker in color.
In a large saucepan over medium-low heat, simmer the sweetened condensed milk for about 10 minutes, stirring constantly so it doesn't burn, until slightly golden.
Add the pumpkin, salt and pumpkin pie spice. Keep cooking and stirring until the mixture begins to bubble, about 5 minutes. Remove from the heat and stir in the vanilla.
Transfer to a bowl and refrigerate until completely cold, about 3 hours.
Whip the heavy cream to stiff peaks. Set aside about ½ cup for topping.
Gently fold the cold pumpkin mixture into the whipped cream. Spoon into serving dishes and top with the reserved whipped cream.
Notes
Keeps covered in the fridge for up to 3 days.
The pumpkin mixture must be completely cold before folding, or the mousse will be runny.