Bake the almond flour cookie dough at 325°F for 12 to 14 minutes. Cool completely.
Pulse or crush into crumbs, reserving 1/2 cup for topping.
Press remaining crumbs into a lined 8x8 or 9x9 pan to form the crust.
Beat cream cheese and sweetener until smooth, add eggs one at a time, then mix in vanilla, sour cream, and salt.
Pour filling over crust, top with reserved crumbs, and bake at 325°F for 30 to 35 minutes until edges are set with a slight center jiggle.
Cool at room temperature, then refrigerate at least 4 hours before slicing.