Butternut Squash, Leek and Onion Soup without dough

6 cups (1/2-inch) cubed peeled butternut squash 2 tablespoons extra-virgin olive oil, divided 2 tablespoons chopped fresh sage 12 garlic cloves, unpeeled[...]

1 tablespoon butter 1 tablespoon olive oil 2 large onions , chopped into 1-inch squares (about 4 cups) 3 tablespoons fresh sage , chopped or 1 tablespoon[...]