In a saucepan over medium heat, whisk togethercornstarch and water until smooth .
Stir in maple syrup andsalt then add 3 cups of the blueberries and bring to a boil.
Remove from heat and stir in lemon zest & juice. Cool and set aside.
In a bowl mix cream cheese and sugar until smooth. Mix in lemon juice and vanilla. Set aside.
Cut each pastry sheet into 9 equal size squares. You will have a total of 18 squares.
Preheat oven to 400 degrees and line a baking sheet with parchment paper.
Place puff pastry squares on baking sheet and cook in preheated oven until golden brown.
Remove to wire rack to cool completely.
Spread cream cheese mixture on top of each pastry.
Spoon blueberry filling on top of cream cheese filling.
Stack one pastry on top of another pastry and dust with powdered sugar.
Serve & enjoy!
Notes
Make sure cream cheese is at room temperature.Allow puff pastry to thaw before cutting.Can use fresh, frozen or canned blueberries. if frozen, be sure to thaw and drain before using.