When making a mushroom risotto, adding a combination of different mushrooms will add complexity to the dish. My favorite mushroom to add would be Morel Mushrooms, though they are pricier. Portobello mushrooms are great for adding a meatier texture. White Button and Crimini are easy to find and a great addition to any mushroom risotto. For a unique twist on mushroom risotto try adding King Oyster, Shitake, and Black Trumpet.