Step 1: Thaw your puff pastry sheet. Unfold it gently on a lightly floured surface. Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Step 2: Prepare the mango filling. Peel and finely dice about 1 cup of ripe mango. You want small, even pieces that will soften beautifully during baking.
Step 3: In a medium bowl, combine the softened cream cheese, granulated sugar, egg yolk, and vanilla extract. Beat with an electric mixer or whisk until smooth and creamy. Gently fold in the diced mango until just combined.
Step 4: Cut the puff pastry. Using a sharp knife or pizza cutter, cut the puff pastry sheet into 8 equal rectangles (2 rows of 4). If you prefer smaller pastries, you can cut them into 12 squares.
Step 5: Assemble the pastries. Place about 1-2 tablespoons of the mango cream cheese filling onto the center of each pastry rectangle, leaving a border around the edges. Don’t overfill, or the filling may ooze out during baking.
Step 6: Create the characteristic pastry shape. You can fold one corner over to the opposite corner to form a triangle, or fold two opposite corners towards the center, overlapping slightly, to form a pinwheel effect. Gently press down the edges with a fork to seal.
Step 7: Place the assembled Tropical Mango Cream Pastries on the prepared baking sheet. In a small bowl, whisk the remaining large egg with a tablespoon of water to create an egg wash. Brush the tops and exposed pastry edges of each pastry with the egg wash. This will give them a beautiful golden sheen.
Step 8: Bake for 18-22 minutes, or until the pastries are puffed up, golden brown, and the filling is set. Transfer the baked pastries to a wire rack to cool slightly.
Step 9: While the pastries are cooling, prepare the glaze. In a small bowl, whisk together the powdered sugar and 1 tablespoon of milk or lime juice until smooth. Add more liquid, a few drops at a time, until you reach your desired drizzling consistency.
Step 10: Drizzle the glaze over the warm Tropical Mango Cream Pastries. Serve warm or at room temperature.