Blend yogurt (or kefir), farmers cheese, maple syrup, lemon juice and vanilla. Leave in the blender.
Using a hand or stand mixer, whip cream until stiff peaks form.
In a small sauce pan, whisk together 1.5 tablespoon of gelatin and 1/3 cup water. Add 4 tablespoons of milk, turn on low heat. Allow gelatin to just melt, remove from heat at once.
Add gelatin liquid to the blender and pulse a couple of times to incorporate.
Gently transfer the blender content into the bowl of whipped cream; fold with a spatula. Don't over mix.
Pour onto the crust. Refrigerate for 2-3 hours, or until firm.