Start by preparing the fruit purees that will bring vibrant flavors to our pastry. Combine **200 grams of passionfruit puree** and **200 grams of lychee puree** in a bowl. Mix well until they are fully incorporated. These purees will provide a delightful tropical taste that enhances the overall dessert.

In a mixing bowl, combine **250 grams of all-purpose flour** and **125 grams of cold, cubed unsalted butter**. Using your fingers or a pastry cutter, blend until the mixture resembles coarse crumbs. Next, add **100 grams of powdered sugar**, **1 large egg**, and **1 teaspoon of vanilla extract**. Mix until it forms a smooth dough, being careful not to overwork it.

Shape the dough into a flat disk, wrap it in plastic wrap, and refrigerate for at least **30 minutes**. Chilling the dough helps it firm up, making it easier to roll out and ensuring a tender pastry once baked.

After chilling, remove the dough from the refrigerator. On a lightly floured surface, roll the dough out to about **5 mm thick** (approximately 0.2 inches). Use a heart-shaped cutter to cut out the pastry shape. Carefully transfer the cutouts to a lined baking sheet. This is where the pastry gets its lovely heart shape, perfect for any occasion!

Preheat your oven to **180 degrees Celsius (350 degrees Fahrenheit)**. Bake the pastry shapes for about **12-15 minutes**, or until they are golden brown. Keep an eye on them as baking times may vary. Once they are done, remove them from the oven and allow them to cool completely.

Once cooled, carefully add a layer of the **lychee and passionfruit puree** on top of one pastry heart, and gently press another pastry heart on top to create a delightful sandwich. This filling adds an aromatic tropical essence that pairs perfectly with the buttery pastry.

Your vibrant heart pastries are now ready to serve! They can be enjoyed as a delightful dessert or a special treat for your loved ones. Don't forget to take beautiful photos to celebrate the creative cooking process and the finished pastries.