Preheat oven to 350 degrees. Spray a baking dish (I like to use a lasagna pan). Once oven is at temperature, place baking dish in oven to heat.
Bring broth to a boil, and hold at a gentle simmer.
Heat oil in a medium pot over medium heat. Sauté the onion for 2-3 minutes, then add the garlic and other vegetables (if making one of the vegetarian versions). Continue cooking until the onion is translucent. Add the rice and stir with a wooden spoon until it is evenly coated with the oil, and is toasty (a minute or two).
Transfer rice to baking dish, add simmering broth, pepper to taste, optional ingredients, and stir. Use your judgment on what ingredients would be better to add after it is cooked (like herbs, the lox, spinach, tomatoes or sautéed mushrooms). Cover tightly with foil and return pan to the oven. Bake about 17 minutes.
Uncover and stir in the heated wine; cover again and bake for an additional 10-15 minutes. You are checking to see that most of the liquid has been absorbed. Remove and stir in optional ingredients. Top with parmesan cheese, and serve immediately.