Dissolve sugar in egg white over double boiler, stirring continuously

Pour mixture into electric mixer and beat on low until room temperature

Turn up speed to high and beat to meringue

Add in butter a little cube at a time and keep beating until creamy and smooth

Beat in nutella and mix until smooth, set aside, covered

In a bowl, heat heavy cream about 35 seconds in microwave

Stir in chopped chocolates, stir to dissolve

Let stand to room temperature, it will thicken, then cover with cling wrap and place in the fridge until solid

Spoon some out and roll into balls, cover, chill until ready to use

Grease and flour 3 -6 inch pans

Preheat oven to 350 F

In microwave, melt butter and chocolate until smooth

Stir in sugar

Add eggs one at a time

Stir in vanilla, flour then salt, mix well

Pour into pans and bake for 30 mins or until a toothpick/knife comes out clean

Let cool in pans for 10 mins then cool completely on rack before decorating

In microwave, heat heavy cream for 25 mins

Stir in chopped chocolates until dissolved, let stand in room temperature, stirring once a while until desired consistency

Place one brownie on serving plate, spread some buttercream, stack another brownie, spread some buttercream and stack the last brownie and cover the whole cake either fully or semi naked with buttercream.

Decorate with wafer, chocolate coated marshmallow, oreo, milk chocolate truffles, Aero mint flavored, chocolate coins, sprinkles, M n Ms, and chocolate coated dried cranberries.

Drizzle with ganace and insert in a spoon (beside for decoration, it's also to eat the nutella ;-))

Then place a Nutella jar

Enjoy :)