Butternut Squash without fruit chops

1 tablespoon extra-virgin olive oil 2 thinly sliced green onions 8 cups finely diced peeled butternut squash, divided (about 4 pounds) 1/2 teaspoon kosher[...]

3 cups (1/2-inch) cubed peeled butternut squash, divided 3 1/2 cups fat-free, lower-sodium chicken broth 2 cups uncooked Arborio rice 2 tablespoons chopped[...]