01 - In a large mixing bowl, combine the peanut butter and cream cheese. Beat with an electric mixer until smooth and creamy, ensuring no lumps remain.
02 - Add the powdered sugar to the peanut butter mixture and mix until fully incorporated and the texture is uniform.
03 - Gently fold in the Cool Whip with a spatula using a light, circular motion. Mix just until combined and airy, taking care not to overmix as this will deflate the mousse.
04 - Divide the mousse evenly among 6 serving glasses or bowls, smoothing the tops with the back of a spoon for an even presentation.
05 - Refrigerate for at least 1 hour to allow the mousse to set and develop the ideal creamy texture.
06 - Just before serving, top with chopped roasted peanuts and chocolate shavings or mini chocolate chips if desired.