This easy no-bake cheesecake mousse whips up in minutes: fluffy whipped cream folded into sweetened cream cheese for a cloud-like dessert topped with buttery graham crumbs. Simple, creamy, and perfect for make-ahead entertaining.
Chill a large mixing bowl and beaters in the freezer for 10 minutes to help the cream whip quickly.
Add cold heavy cream to the chilled bowl and whip to medium peaks; set aside.
In a separate bowl, beat softened cream cheese until completely smooth, scraping the bowl as needed.
Beat in powdered sugar, vanilla, lemon juice, and salt until light and fluffy, about 1 to 2 minutes.
Fold the whipped cream into the cream cheese mixture in two additions until no streaks remain.
Stir graham cracker crumbs with melted butter until evenly moistened and the mixture resembles wet sand.
Spoon or pipe the mousse into 6 small cups or jars, sprinkle with the crumb topping, and chill for at least 30 minutes before serving.
Notes
Make ahead: Cover and refrigerate up to 2 days; add crumb topping just before serving for best crunch. For a tangier mousse, substitute 0.5 cup of the cream cheese with mascarpone or add 0.5 teaspoon lemon zest. Serve plain or with fresh berries.