Chop the chocolate

• Chop the Kinder Chocolate into bigger chunks and set aside.

Mix the wet ingredients

• In a large bowl, mix together the butter, granulated sugar and brown sugar.
• Mix in the egg, egg yolk and vanilla.

Add the dry ingredients

• Add the flour along with the baking powder and mix until just combined.

Fold in the chocolate

• Fold in the Kinder Chocolate chunks.

Scoop and chill the dough

• Scoop out 10 equal cookies onto a tray.
• Cover with plastic wrap and refrigerate for a minimum of 1 hour, up to 48 hours.

Preheat the oven

• 10 minutes before baking, preheat the oven to 170 °C fan setting.

Bake the cookies

• Place the cookies onto a baking tray lined with baking paper, leaving space between them.
• Bake in the preheated oven for 10 to 12 minutes.

Finish and serve

• Top the cookies with more chocolate and let them firm up a bit before serving.