Pour milk and white vinegar into a bowl, mix and let it sit for 5 mins.
To this, add nutella, oil and sugar and give it a good mix.
Sift in the all purpose flour, baking powder and baking soda. Gently fold the dry ingredients in without over mixing
Microwave on normal settings for 3 mins or till a skewer comes out clean.
For the nutella ganache, in a bowl take melted dark chocolate and pour warm cream over it. Now add nutella and mix it well to achieve a smooth ganache.
Top it up with nutella chocolate ganache and hazelnuts and serve immediately.
Recipe by Bake with Shivesh at https://bakewithshivesh.com/one-bowl-nutella-cake/