Preheat the oven to 425.
Add the cabbage to a large sheet pan, add the olive oil, tamari, salt, garlic powder and pepper and toss to coat.
Place the cabbage in the oven for 25-30 minutes, tossing halfway. It should be tender and browned.
Make the crumble topping. Add the peanuts, scallions, basil, dates, lime zest, salt and red pepper flakes to a bowl. Toss to combine.
Make the dressing. Add all ingredients to a jar, add the top and shake or whisk until well combined.
Add the cabbage to a shallow bowl, add the crumble, the dressing to taste. Toss to combine.
