In a large mixing bowl, combine the heavy cream and Biscoff spread.
Using a hand mixer or stand mixer, whip the mixture until smooth and medium peaks form.
Be careful not to overbeat, as the mousse may separate.
Spoon the 2 Ingredient Biscoff Mousse Recipe into a large serving bowl or individual dessert cups.
Refrigerate for at least 30 minutes or until chilled.
Drizzle with additional Biscoff spread if desired.
Garnish with crushed or whole Biscoff cookies.
Serve chilled and enjoy.