01 - In a large mixing bowl, combine the peanut butter and cream cheese. Beat with an electric mixer until smooth and creamy.
02 - Add the powdered sugar and mix until fully incorporated and no lumps remain.
03 - Gently fold in the Cool Whip with a spatula, mixing just until combined and airy. Do not overmix to maintain the light texture.
04 - Portion the mousse evenly into serving glasses or bowls, smoothing the tops with a spatula if desired.
05 - Refrigerate for at least 1 hour before serving to allow the mousse to set and achieve the best texture.
06 - Garnish with chopped peanuts and chocolate shavings or mini chocolate chips if desired before serving.