Nutella filled heart puff pastries are easy to make and so cute! Made with frozen puff pastry, they're the perfect simple treat for any kid or adult Valentine's party!
Preheat oven to 400℉ and line a baking pan. In a small bowl, combine the egg and milk, whisk together well. Set aside.
Sprinkle a little flour over your counter and on your rolling pin. Roll the first sheet of pastry into a 12in x 12in square. (*See notes) With a heart shaped cookie cutter, cut as many shapes as you can. You can take the scraps and reroll a couple of times to get a couple more shapes. Just ensure you don't overwork the pastry or it will get tough.
Lay the cut out hearts on the pan and dollop about 1 tbsp of Nutella into the middle. Spread it around leaving a 1 inch or 2cm border to prevent leakage. Do this to each heart Remember, you need 2 hearts per pastry so try to get an even number.
Once you've filled them all, using a pastry brush or paint brush, paint a little egg wash around the border you've left. Then take another heart cutout and lay it on top, ensuring you line them up. Using your fingers, pinch the edges together all around. Make sure they're aren't any gaps or the filling can leak.
Do this to each one and then paint a little more egg wash over the top of each pastry. Top with sprinkles or coloured sugar here if you want. Bake in the oven for about 15-17 minutes or until golden in colour. Continue this until you've used up all your pastry, including the second sheet of pastry. You may end up with a few scraps leftover at the end. (**See notes)
Eat warm or let fully cool and store in an airtight container for up to 2 days and enjoy!
Notes
*If it’s warm in your kitchen, keep the second sheet of pastry in the fridge. If the pastry gets too warm, the butter can leak and you’ll lose the flaky layers. Take it out again once you’re ready to use it.**If you don’t want to waste any pastry, roll out the scraps like before into a square or rectangle. Cut it in half with a pizza cutter, knife, etc. Fill with Nutella the same way you would the hearts, with a border, and then egg wash the perimeter. Layer the other half on top and egg wash it. Then bake it.