01 - Combine the peanut butter and softened cream cheese in a large mixing bowl. Beat with an electric mixer until completely smooth and creamy, ensuring no lumps remain.
02 - Add the powdered sugar to the peanut butter mixture. Mix thoroughly until the sugar is fully dissolved and the texture is uniform.
03 - Gently fold in the thawed Cool Whip using a spatula. Mix just until combined and the mixture becomes light and airy—take care not to overmix as this will deflate the texture.
04 - Divide the mousse evenly among 6 serving glasses, bowls, or parfait glasses. Smooth the tops with the back of a spoon for an even presentation.
05 - Refrigerate the mousse for at least 1 hour to allow it to set and develop the proper texture. This resting period is essential for the best consistency.
06 - Just before serving, top with chopped roasted peanuts and chocolate shavings or mini chocolate chips if desired.