Preheat the oven to 350F and line a 12 cup muffin tin with liners
Crust:
Mix together the almond flour, granular sweetener, and butter. Spoon the mixture evenly in the muffin cups and press in with your fingers.
Filling:
Combine the cream cheese, egg, powdered sweetener, sour cream, and vanilla extract with a hand mixer until smooth. Spoon the mixture evenly into the muffin cups. About 2 tablespoons for each cup.
Bake in the preheated oven for 20 minutes. Remove from the oven and let cool completely. Chill in the refrgerator for atleast 3 hours to firm up. Serve.