01 - Combine cream cheese, chives, dill, black pepper, and salt in a small bowl. Mix thoroughly until completely smooth and well incorporated.
02 - Lightly spread softened butter on one side of each bread slice to create a moisture barrier and prevent sogginess.
03 - Spread a generous layer of the herbed cream cheese mixture over the buttered side of 4 bread slices, ensuring even coverage to edges.
04 - Arrange cucumber slices in a single layer over the cream cheese, allowing slight overlap for complete coverage and optimal texture distribution.
05 - Top each assembled sandwich with a remaining bread slice, buttered side facing down. Press gently but firmly to seal.
06 - Trim any remaining crusts for uniform appearance. Slice each sandwich into three neat fingers or four quarters for elegant presentation.
07 - Serve immediately for optimal freshness, or cover with damp paper towel and refrigerate for up to 2 hours before serving.