This salted caramel layer cake is a decadent dessert that is sure to impress. The cake layers are made with caramel and buttermilk, giving them a rich, buttery flavor. The frosting is a salted caramel buttercream that is both sweet and salty. The cake is finished with a drizzle of caramel sauce and a sprinkle of sea salt, making it the perfect balance of flavors.