Wash and slice the cucumbers into thin ribbons using a vegetable peeler or mandoline. Place in a colander and sprinkle with salt. Toss gently and let drain for 1 hour.

In a medium bowl, mix the dressing ingredients: soy sauce, rice vinegar, peanut butter, honey, garlic, red pepper flakes, and black pepper. Whisk until smooth.

After an hour, gently squeeze cucumbers to remove moisture. Transfer to a clean bowl and add toasted peanuts and parsley. Pour the dressing over and toss to combine.

Serve immediately on plates or a platter, showcasing the colors of cucumbers, peanuts, and parsley.