01 -
Get your oven hot at 375°F (190°C). Put some parchment paper on your baking sheet.
02 -
Take your puff pastry that's warmed to room temp and shape it into hearts with a knife or cookie cutter.
03 -
Pop the heart shapes onto your lined baking sheet and stick them in the fridge for 10 minutes so they don't lose their shape.
04 -
Drop about 1 tablespoon of Nutella in the middle of half your heart pieces, making sure to stay away from the edges.
05 -
Cover each Nutella-topped heart with another pastry heart. Push the edges together to close them up, maybe using a fork to make pretty marks.
06 -
Stir the egg and water together and paint it over your pastries to make them turn nice and golden.
07 -
Cook them for 15-18 minutes until they're puffy and golden brown. Let them cool a bit before you eat them.
08 -
Sprinkle some powdered sugar on top and add fresh berries or whipped cream if you want.