In a large bowl, combine almond flour, melted butter, sweetener, and cinnamon. Mix together using a spoon until the ingredients are homogeneous. Add the mixture into a spring form pan and press this mixture evenly to make the crust firm and tight.
Bake the crust for 10 minutes until it becomes lightly golden browned and remove the crust from the oven. Let it cool while you make the filling.
In a bowl, combine eggs, sweetener, cream cheese, sour cream, and vanilla. Mix thoroughly with a hand whisk or blender until smooth then add this mixture to the crust and bake the cheesecake at 350 F for 30 min.
Remove and refrigerate for six hours. You can add berries and whipping cream on the top to decorate (optional). Enjoy!
You can cut this cheesecake into 16 pieces. The serving size is 1 piece of cake.