start with white cake and mix in chunks of macadamia nuts
in between each layer of cake, add white chocolate ganache (home made of course!) caramel, more macadamia nuts, and Fleur de sel sea salt..
Cover the cake with caramel buttercream (mix home made vanilla buttercream with caramel- to make caramel buttercream)
add decorate borders, white chocolate ganache, caramel, macadamia nuts and sea salt!!
and there ya go!