01 - Preheat oven to 350°F. In a bowl, combine almond flour, powdered erythritol, melted butter, and salt. Mix until mixture resembles wet sand and holds together when pressed.
02 - Press crust mixture firmly into the bottom and up the sides of a 9-inch pie dish, creating an even layer. Bake for 8-10 minutes until lightly golden. Remove from oven and let cool completely before filling.
03 - Sprinkle gelatin powder over cold water in a small microwave-safe bowl. Let stand for 5 minutes to bloom. Microwave for 10-15 seconds until completely dissolved and liquid. Set aside to cool slightly.
04 - Beat softened cream cheese with powdered erythritol in a large bowl until completely smooth and no lumps remain. Scrape down sides of bowl as needed.
05 - Pour in cold brew coffee and vanilla extract. Mix on medium speed until fully incorporated and mixture is smooth and creamy.
06 - In a separate bowl, whip 1/2 cup heavy cream to stiff peaks. Gently fold whipped cream into the cream cheese mixture until no white streaks remain.
07 - Temper the melted gelatin by stirring a small amount of the filling mixture into it, then pour gelatin mixture back into the main filling. Stir quickly until evenly distributed.
08 - Pour filling into the cooled crust, smoothing the top with an offset spatula. Refrigerate for at least 2 hours or until completely set and firm to the touch.
09 - Whip remaining 1/2 cup heavy cream with 1 tablespoon powdered erythritol to stiff peaks. Spread or pipe over the chilled pie surface.
10 - Decorate with whole coffee beans or dust lightly with cocoa powder if desired. Slice and serve cold. Store leftovers covered in the refrigerator.