Butternut Squash Risotto

Bahan-bahan (4 porsi)

• 2 cups butternut squash (½" cubed, about 1 pound)
• 2 tablespoons olive oil (divided)
• ½ cup diced onion
• 1 cup arborio rice
• ½ cup white wine (or extra broth)
• ¼ teaspoon ground sage
• 4 cups chicken broth (divided, or as needed)
• ¼ cup shredded Parmesan cheese