Julienne cucumber, carrot, and green onion.
Mix peanut butter, soy sauce, vinegar, sugar, chili powder, minced garlic, and sesame oil to make the sauce.
Boil the somyeon noodles, rinse under cold water, and drain.
Add the vegetables and sauce to the cooked noodles and mix well.
Plate the noodles and top with roasted peanuts as garnish.