This Nutella cake is a decadent and fudgy chocolate cake layered with a Nutella buttercream frosting. This Nutella layer cake is simple to make with just two bowls and a whisk.
In another large bowl add the oil, granulated sugar, Nutella, eggs, and milk. Whisk until smooth and well combined. Mix in the hot, but not boiling water until well combined.
In another large bowl add the oil, granulated sugar, Nutella, eggs, and milk. Mix in the hot, but not boiling water until well combined.Mix the dry ingredients into the wet until just combined.
Bake the cakes for about 35 - 40 minutes. Cool the cakes in the pan for 15 minutes then carefully remove the cakes from the pan to cool completely. Once cooled, place the cake layers in the fridge for 1-2 hours before frosting.
Make the Nutella buttercream frosting. Beat the butter and powdered sugar on low speed until smooth and well combined. On low, beat in the Nutella, vanilla extract, salt and 2 tablespoons heavy cream until mostly combined. Increase the speed to medium-high for 1-2 minutes.