Cook soba noodles according to package instructions. Drain in cold water and add to a large salad bowl.
Prepare the dressing - add the miso paste, soy sauce, vinegar, sesame oil and honey into a small bowl and whisk until well combined. Set aside.
Add the shredded cabbage, carrot matchsticks, and sliced watermelon radishes to your soba noodles.
Add in half of the dressing and toss well with tongs, adding more dressing as needed.
Top with sesame seeds and green onions. Serve alongside your favorite protein such as grilled chicken, tofu, or shrimp.