Clean, peel, trim, and chop the cucumber, peppers, and cauliflower into bite-sized pieces.
Add Greek yogurt, buttermilk, onion powder, garlic powder, dried dill, parsley, salt and pepper to small bowl and whisk until well combined.
Using a sharp knife or star cookie cutter, cut the cheese into small stars.
Add ranch dip to a small bowl and place place the bowl in the top, left corner of a rectangular tray. Arrange the vegetables in rows on the tray around the bowl to create the red and white stripes of the flag.
Spread the black olives over the ranch dip and place cheese stars on top of the chopped olives.
Serve and enjoy!