In a medium bowl, combine 8 ounces of cream cheese, 1/4 cup sour cream or mayonnaise, 2 tablespoons finely chopped dill, and a pinch of kosher salt. Mix until smooth and creamy.

Lay out the crustless sandwich bread slices on a clean cutting board. Evenly spread approximately 2 tablespoons of the herbed cream cheese mixture on one side of each slice.

Take 1 English cucumber and slice it thinly, around 1/8 inch thick. Layer these cucumber slices evenly over half of the bread slices.

Place the other half of your prepared bread slices, spread side down, on top of the cucumber-laden slices, gently pressing to seal.

Trim off the crusts of each sandwich and cut into smaller pieces, either into triangles or rectangles.

Arrange the sandwiches on a serving platter and garnish with extra dill or thin cucumber slices. Serve immediately or chill for about 15 minutes.