Smoked Salmon Sandwich

1/4 cup mayonnaise
1 tablespoon minced green onion
1 tablespoon minced fresh dill weed
1 tablespoon capers, drained
1 teaspoon prepared horseradish
Pepper to taste
2 teaspoons butter, room temperature
8 slices pumpernickel bread
4 pieces smoked salmon
12 cucumber slices, thinly sliced

In a small bowl, combine mayonnaise, green onion, dill weed, capers, horseradish, and pepper; set aside.

Spread butter thinly over pumpernickel bread slices; spread mayonnaise mixture on each bread slice. Divide salmon and cucumber slices evenly over 4 slices of bread; top with remaining bread slices. Cut each sandwich in half diagonally. Transfer to individual serving plate and serve.