Line a large tray with baking paper and preheat your oven to 200℃ (400℉). If you're using a fan or convection, set it slightly lower at 180℃ (350℉).
Unroll the first puff pastry sheet and place it onto your lined tray.
Melt the hazelnut creme in the microwave for 10-15 seconds, until it's soft and runny.
Spread the hazelnut creme over the pastry sheet, leaving a small gap around the edges. Then sprinkle over the crushed Kinder Bueno pieces.
Top with the second puff pastry sheet then use a sharp knife or pizza cutter to cut the pastry into 8 long strips.
Twist the pastry strips then roll them into spirals (see images or video for reference).
Place the spirals onto your lined baking tray and lightly brush with the beaten egg.
Bake for around 15 minutes, or until the nests are golden brown all over.
Leave to cool then drizzle melted Kinder chocolate and more hazelnut creme over each nest.
Add the Kinder Mini Eggs, let the chocolate set then enjoy!