Chocolate Mousse Pie

0 Preheat your oven to 350°F (175°C).
1 In a food processor, pulse the Oreo cookies (with the cream filling) until they turn into fine crumbs.
2 In a mixing bowl, combine the Oreo crumbs with the melted butter. Stir until the crumbs are evenly coated.
3 Press the mixture into the bottom and up the sides of a 9-inch (23 cm) pie dish.
4 Bake the crust in the preheated oven for about 8-10 minutes. Remove from the oven and allow it to cool completely.
For the Chocolate Mousse Filling:
6 In a microwave-safe bowl, combine the chocolate chips, 1/4 cup of butter, and coffee granules (if using). Melt the mixture in the microwave, stirring at 20-30 second intervals until smooth. Allow it to cool slightly.
7 In a separate microwave-safe bowl, heat 1/2 cup of heavy cream until it's steaming but not boiling. This should take about 45 seconds to 1 minute.
8 Pour the hot cream over the melted chocolate and stir until well combined. Set this mixture aside to cool to room temperature.
9 In a separate bowl, beat the remaining 1 cup of heavy cream with the sugar and vanilla extract until it forms stiff peaks.
Assembly
10 Pour the chocolate mousse into the cooled Oreo crust.
11 Refrigerate the pie for at least 2 hours or until the mousse is set.
13 Before serving, top with whipped cream and garnish with grated chocolate or chocolate shavings.
14 Slice and enjoy your luscious Chocolate Mousse Pie with Oreo Crust!