In a medium-sized saucepan, bring the chicken broth to a simmer over medium-high heat. Then keep the hot broth over low heat and covered with a lid until you're ready to use it.
5-6 cups chicken broth
In the large skillet, melt 2 tablespoons of truffle butter over medium heat. Add in shallots, thyme, and truffle spread and saute until the shallots translucent, about 3-5 minutes. Stir in the minced garlic and cook for another minute.
3 tablespoon black truffle butter, 2 teaspoon black truffle spread, 1 medium shallot or small yellow onion, ½ teaspoon fresh thyme leaves, 4 cloves garlic
Add in the risotto rice, stirring to coat each grain with the butter, and cook for 1 minute to toast. Add the quarter cup of white wine, if using, or replace the wine with a quarter cup of chicken stock.
1 ¼ cup uncooked arborio rice, ¼ cup dry white wine
For the next twenty five minutes or so, pour a cup of the hot chicken stock at a time into the rice and stir it in. Let the rice soak up the stock, stirring in another cup of chicken broth just before the rice dries out.
When the rice is cooked through and creamy, turn off the heat. Mix in the parmesan cheese and the last tablespoon of truffle butter. Add more than ½ cup of cheese if desired.
½ cup parmesan cheese, 3 tablespoon black truffle butter
Taste, then season with salt and freshly ground black pepper to taste.
Kosher salt and freshly cracked black pepper
Mix in or top the risotto with the pan seared mushrooms.
Serve the mushroom and truffle risotto hot and garnish with more parmesan cheese, if desired.