Directions

1. In a pot of boiling salted water, cook noodles until al dente. Drain; set aside.
2. Heat a large skillet over medium-high. Season steak with salt and pepper. Cook (in batches if necessary), turning once, until medium-rare, 2 to 6 minutes per side.
3. Transfer steak to a cutting board, and loosely tent with aluminum foil (reserve skillet with juices). Add snow peas to skillet and toss with juices. Cook on medium-high, tossing occasionally, until crisp-tender, 2 to 3 minutes. Add noodles and soy sauce. In a small bowl, whisk together miso with 2 tablespoons water; add to noodles. Cook until warmed through, about 20 seconds.
4. Transfer to serving bowls. Slice steak; place on top of noodles, and add any accumulated juices. Scatter with peanuts and garnish with scallions and cilantro; serve.