Last week when I was in the grocery store I saw packs of puff pastry that contained 5 squares per package. I knew that they had to come home with me.
Ingredients: 5 squares of puff pastry thawed in the fridge overnight, 1/3 cup of mascarpone cheese, 1 teaspoon of corn starch, 2 tablespoons + 1 of white granulated sugar, 1 teaspoon of lemon juice, zest off of 1/2 a lemon, 1/3 cup blueberries (fresh or frozen)*, 1 egg beaten
Preheat Oven to 350.
Bring mascarpone cheese to room temperature. Mix in 2 tablespoons of sugar, corn starch, lemon zest & juice and blueberries. Beat the egg.
Line a baking sheet with parchment paper and lay out the puff pastry. Place a spoonful in the center and fold in half. Crimp the edges with a fork. Brush tops with beaten egg and then sprinkle with remaining sugar. Bake at 350 for 25 minutes.