Prepare the crust by measuring out almond flour and setting it aside.
In a mixing bowl, combine softened cream cheese, powdered erythritol, and vanilla extract. Beat until smooth and creamy.
In a separate bowl, whip the heavy cream until stiff peaks form. Gently fold into the cream cheese mixture.
If desired, sift in cocoa powder for chocolate flavor and mix well.
Add almond flour and salt to the mixture and stir until well blended.
Spoon the mixture into a mini muffin tin lined with paper liners, filling each cup about 3/4 full.
Sprinkle chopped nuts or sugar-free chocolate chips on top if desired.
Chill in the freezer for at least 120 minutes until firm.
Remove from the tin and store in an airtight container in the refrigerator.