Cut off the bread crusts. Brush the slices with soft butter on both sides.
Mix cream cheese, mayonnaise and sour cream. Set aside part of the cream for the outside, divide the other part for the fillings.
Mix the filling additives with the cream parts. Layer the bread and two different fillings alternately. Spread the reserved cream on the outside of the cake.
Refrigerate the cake for several hours or overnight. Garnish just before serving.