In Atlanta, Flip Burger Boutique (Richard Blais is the chef/consultant) has this amazing nutella and burnt marshmallow milkshake. A dear friend of mine craves this shake on a near daily basis. It is her birthday on Friday and I thought it would be fun to make her a cake based on these flavors. I was originally thinking of making a yellow cake, folding in some nutella into a chocolate buttercream recipe, piling on mini-marshmallows on top of the frosted cake with crushed, toasted hazelnuts, and drizzled with chocolate. I was also going to try to torch the marshmallows but thought it maybe hard to cut into the cake if I did that.
1) Would a white cake be better than a rich, buttery yellow cake?
2) Can you think of any problems w/folding nutella into a typical chocolate buttercream frosting? I was wondering if it would affect the texture adversely.
3) Thoughts on the marshmallow topping to try to mimic the burnt, caramelized flavor but not make it impossible to cut into?
Thanks in advance!