Step 1

Puree first 9 ingredients and 1 teaspoon red pepper in blender until smooth. With machine running, gradually add canola oil through opening in lid. Season dressing to taste with salt and pepper. DO AHEAD: Can be made 1 day ahead. Cover and chill. Bring to room temperature before continuing.

Step 2

Cook soba noodles in large pot of boiling salted water until tender but still firm to bite. Drain. Rinse with cold water; drain well. Using kitchen shears, cut noodles crosswise in 2 to 3 places. Drizzle noodles in strainer with sesame oil and toss to coat.

Step 3

Place greens, bok choy, cucumber, green onions, chopped cilantro, and mint in large bowl. Add 1 teaspoon red pepper, dressing, and noodles; toss to coat. Season to taste with salt and pepper. Garnish with cilantro sprigs and peanuts and serve.