In a small bowl, whisk all the ingredients together. Set aside.
Use a sharp knife to peel alternating strips of skin from the cucumber. Slice the cucumber crosswise into ¼ inch thick slices and place on a platter.
In a medium bowl, beat the cream cheese, butter, yogurt, garlic powder, and salt until well combined and smooth.
Attach a star shaped tip to a piping bag and fill the bag with the cream cheese mixture. Pipe decoratively on top of the cucumber slices.
Sprinkle each slice with everything bagel seasoning and serve.
