For the Cashew-Chickpea Crunch: Preheat oven to 425°F. In a bowl, whisk together cashew butter, olive oil, miso, tamari, and ginger. Add chickpeas, cashews, and sesame seeds; toss to combine. Spread in an even layer on a rimmed baking sheet. Roast, stirring occasionally, until crunchy and golden, 13 to 15 minutes. Let cool completely.
For the Salad: Meanwhile, in a large bowl, whisk together vinegar, ginger, sesame oil, and olive oil. Season with salt and pepper. Add cabbage, radishes, and cilantro; toss to coat. Fold in mandarins and season. Serve salad topped with chickpea crunch.
