original recipes found here and here
1) Preheat oven to 350ยบ F. Prepare two 9-inch cake pans by spraying with baking spray and lightly flouring.
2) Add flour, sugar, cocoa, baking powder, baking soda and salt to a large bowl. Whisk through to combine or until combined well.
3) Add milk, vegetable oil, eggs, and vanilla to flour mixture and mix together on medium speed until well combined. Reduce speed and carefully add boiling water to the cake batter until well combined.
4) Distribute cake batter evenly between the two prepared cake pans. Bake for 30-35 minutes, until a toothpick or cake tester inserted in the center of the chocolate cake comes out clean.
5) Remove from the oven and allow to cool for about 10 minute before removing from the pan, then cool completely on a cooling rack.
6) After completely cooked, frost cake with Nutella Buttercream Frosting
Nutella Buttercream Frosting:
1.5 cups salted butter, room temperature
4 3/4 cups powdered sugar
1 cup Nutella
1 TBSP vanilla extract
3 TBSP buttermilk
1/4 tsp salt
1) Mix softened butter and powdered sugar until combined. Mix in Nutella, then the vanilla, buttermilk and salt. Frost cake!