In a mixing bowl, combine the crushed graham crackers, melted butter, and granulated sugar. Mix until the crumbs are well-coated with butter. Press this mixture firmly into the bottom and up the sides of a 9-inch pie dish. Place in the refrigerator to set while you prepare the filling.
In a microwave-safe bowl, melt the chopped white chocolate in 30-second intervals, stirring in between until completely smooth. Set aside to cool slightly.
In a large mixing bowl, whip the heavy cream until soft peaks form. Gradually add the powdered sugar and continue whipping until stiff peaks form.
In another bowl, mix the mascarpone cheese with the peppermint extract until smooth and creamy. Gently fold in the melted white chocolate until fully incorporated.
Carefully fold the whipped cream into the mascarpone and white chocolate mixture to keep the mixture light and airy. Gently fold in the crushed peppermint candies.
Pour the mousse filling into the prepared graham cracker crust, smoothing the top with a spatula. Refrigerate for at least 4 hours, or until set.
Before serving, dollop whipped cream on top and sprinkle with additional crushed peppermint candies for decoration and crunch.
Notes
Chill the pie for at least 4 hours to ensure it sets properly.
Keyword mousse, no bake, peppermint, pie, white chocolate