1-Step 1: Make the Cookie Crust Preheat your oven to 350°F and generously spray a 9-inch deep-dish pie pan with cooking spray. A deep pie pan is essential here because this filling is wonderfully tall and substantial. Place your chocolate sandwich cookies in a food processor and grind them until you have fine, even crumbs. Don’t bother removing the cream filling, it actually helps hold the crust together. Transfer the crumbs to a bowl and pour in the 3 tablespoons of melted butter. Mix until all the crumbs are evenly moistened. Press the mixture firmly onto the bottom and up the sides of your prepared pie pan. Use the bottom of a measuring cup or the back of a spoon to get an even layer. Bake for 10 minutes until the crust is set and smells wonderfully fragrant. Set it aside to cool completely before filling.

2-Step 2: Cook Eggs and Sugar This is the step that sets this recipe apart from old-fashioned French silk pie preparations. In a medium saucepan, whisk together the sugar and eggs until well combined. Cook over medium-low heat, whisking constantly, until the mixture reaches 160°F on an instant-read thermometer. You’ll notice the mixture thickening and coating the back of a spoon after about 5-7 minutes. This cooking step eliminates any concerns about raw eggs while giving you that same silky consistency. Remove from heat and stir in the melted chocolate and vanilla extract until smooth. Let this mixture cool to about 75°F, stirring occasionally to release heat. You can speed this up by spreading the mixture in a wide, shallow container, which increases surface area for faster cooling.

3-Step 3: Whip the Butter While your chocolate mixture cools, beat the room-temperature butter in a large bowl until it’s pale and fluffy, about 2-3 minutes. The butter should be around 67°F for optimal whipping, so if it’s too cold it won’t cream properly, and if it’s too warm it will be greasy. Once your chocolate mixture has cooled sufficiently, gradually add it to the whipped butter with the mixer running. Beat on high speed for 5 full minutes. This extended beating time is what creates that incredibly light, aerated texture French silk pie is famous for.

4-Step 4: Fold in Whipped Cream In a separate bowl, whip the cold heavy cream and powdered sugar until stiff peaks form. The cream must be very cold, and it should have at least 36% milk fat for the best whipping results. Gently fold the whipped cream into the chocolate mixture in three separate additions. Use a spatula and a light hand, cutting through the center and folding over. Keep folding until no white streaks remain and the filling is uniformly fluffy and mousse-like.

5-Step 5: Assemble and Chill Spread the filling evenly into your cooled crust, smoothing the top with an offset spatula. The pie will be quite tall, which is exactly what you want. Refrigerate for at least 6 hours, though overnight is even better. The filling needs this time to fully set and develop that creamy, sliceable consistency.

6-Step 6: Make the Topping When you’re ready to serve, whip together the cold heavy cream, powdered sugar, and vanilla extract until stiff peaks form. Spread or pipe this over the chilled pie. Garnish with chocolate shavings or a dusting of cocoa powder right before serving for the best presentation.