•In a large mixing bowl, add the cubed butter and whisk until slightly creamy. Add the white sugar and light brown sugar, then whisk together until well combined.

•Add one whole egg + egg yolk, vanilla extract and Whisk until fully incorporated.

•Add baking powder, baking soda, and salt and mix everything together and then in a separate bowl mix flour and cinnamon powder together and add it into the batter, gently mix until just combined, do not overmix.

•In a separate bowl mix cinnamon powder and sugar together and keep it aside.

•In the prepared square pan add half of the batter and add huge dollops of nutella and then add rest of the batter. Coat the top with cinnamon & sugar mixture.

•Bake for 25-30 minutes or until the tops are lightly golden while the centres remain soft.

•Remove from the oven and let it cool. At this point you can coat it again with cinnamon sugar mixture.

•Enjoy✨