Blitz the biscuits in a food processor till crumbed. Melt the butter, and stir in the cocoa powder and salt.
Once the mixture is slightly cooled, add in the crumbed biscuits and mix well. The consistency should resemble wet sand.
Use your fingers to press the mixture into a 7-inch tart pan. Use the bottom of a glass or a spatula, to press and secure the mix in an even layer, if needed.
Once done, place in the fridge to set for three hours.
For the Nutella filling
Place the dark chocolate, Nutella and heavy cream in a bowl and microwave for 30 seconds at a time until melted. Use a spatula to mix well till you achieve a smooth, lump-free and glossy filling. (You can also add chopped toasted hazelnuts to the filling for a special crunch).
Pour the filling into the chilled tart pan and place it back into the fridge to set for at least four to five hours.
Once the tart has set, garnish with hazelnuts or gold leaf if desired, and serve immediately.
Keyword dark chocolate and nutella tart, Jeena J Bilimoria, no bake dessert, no bake eggless desserts, no bake nutella dessert