For the vinaigrette, whisk all ingredients together and refrigerate until ready to use.
Preheat oven to 400 degrees F. Line baking sheet with parchment paper.
Spread butternut squash pieces into a single layer on the baking sheet. Drizzle with olive oil and season with salt and pepper.
Toss gently to coat and then roast for 20-25 minutes, tossing once during cooking, until squash is tender.
Allow to cool while you prepare the rest of the salad.
Add kale and spinach to a large salad bowl.
Top with remaining salad ingredients Drizzle with vinaigrette and toss gently.
