Make the dressing: In a small bowl, whisk together the cashew butter, miso paste, lime juice, sesame oil, and ginger. Whisk in enough water to create a drizzable consistency. Set aside.

In a dry cast-iron skillet over medium heat, char the peppers whole, rotating until the edges have a little char, about 2 minutes per side. Remove. When cool to the touch, slice in half lengthwise, remove the stem, ribbing, and seeds and slice horizontally into thin strips.

In a large bowl, combine the cabbage, peppers, scallions, cilantro, basil, chiles, and 3/4 of the dressing. Toss until combined. Add the remaining dressing, if desired, and season to taste with a few pinches of sea salt. Serve topped with the toasted nuts, seeds, and sliced peaches.