Butternut Squash with tenders

5 cups (1/2-inch) cubed peeled butternut squash 1 teaspoon olive oil 1 1/2 cups thinly sliced leek (about 2 large) 2 cups (1/2-inch) cubed peeled Braeburn[...]

4 cups (1/2-inch) cubed peeled butternut squash 7 teaspoons extra-virgin olive oil, divided 1/2 cup walnuts, chopped Cooking spray 1/2 teaspoon kosher salt,[...]