2. Warm the olive oil in a deep sauté pan. Add the garlic and sage and sauté for a few minutes.
3. Add the squash, sprinkle it with salt, and stirring, cook for 1 minute. Add the rice and stir until the rice is opaque, about 3 minutes. Add the white wine (if using) and cook until it evaporates, just a few minutes.
4. Add a ladleful of the simmering broth (about 1 cup) and stir until the broth is absorbed. Lower the heat. Continue to add broth, a ladleful at a time, until the rice kernels are al dente in the center and creamy on the outside, 20 to 25 minutes in all.
5. Stir in 4 tablespoons of the Parmesan cheese. Adjust salt and pepper to taste. Serve immediately, sprinkled with the remaining grated cheese.
Note: If you do not want to take a chance of overcooking the squash with the rice and having it break down, which is the old fashioned Jewish-Italian way, you can cook it separately in the vegetable broth and add it to the rice along with the last addition of broth.