In a food processor, combine cottage cheese with Monk fruit & Allulose. Process until smooth and creamy. Set aside.
Place the lemon juice in a small sauce pan over medium heat until simmering. Sprinkle in the gelatin powder and whisk until completely dissolved. Set aside to cool.
In a large mixing bowl combine the heavy whipping cream with lemon stevia. Beat with an electric mixer or stand mixer until stiff peaks form. Set aside.
Fold the cottage cheese mixture into the whipped cream and stir together until combined. With the stand mixer on low, drizzle in the cooled lemon juice gelatin mixture. Stir in 1 cup blueberries and lemon zest if using.
Spread mixture into a cooled pie crust. Sprinkle blueberries and lemon zest on top of the pie. Cover and refrigerate for 2-3 hours or for best results overnight.
Optional topping for decoration; I like to add more whipped cream around the edges of the pie using my whipped cream canister to decorate with the star tip.
Storage: Cover with plastic wrap or place leftover pieces in an airtight container and refrigerate for up 5 days.