1poundfettuccine (450g), cooked just short of al dente, drained, and set aside; pasta water reserved
2tablespoonsunsalted butter
1tablespoonolive oil
1shallot, diced
4clovesgarlic, minced
½ounce(15g) dried porcini mushrooms, rehydrated in hot water and roughly chopped
2cups(250g) fresh mushrooms, roughly chopped
⅓cup(80mL) dry white wine
3tablespoonsaged balsamic vinegar
1 ¼cups(300mL) heavy cream
½cup(50g) freshly grated Parmigiano-Reggiano cheese, plus more for serving
Flat-leaf parsley, chopped
Kosher salt and freshly ground black pepper
Step by Step Instructions
Step 1
In a heavy, wide, deep skillet, heat the butter and olive oil over medium heat until hot.
Add the shallots and garlic, stirring for 2-3 minutes until softened and fragrant.
Step 2
Turn the heat to medium-high, add the porcinis, and cook for a few minutes, allowing most of the water to cook out. Season lightly with salt and pepper.
Step 3
Add the remaining mushrooms and stir to coat. Leave undisturbed for about 3 minutes, or until well-browned.
Season once again with salt and pepper, stir, and allow the mushrooms to finish cooking until they are browned and the water has cooked out.
Step 4
Add the wine and stir, scraping up any fond that has collected at the bottom of the pan. Allow the wine to reduce, add the balsamic vinegar, and stir well to combine.
Add the heavy cream, bring to a simmer, and reduce the heat to medium-low. Allow to simmer for several minutes, concentrating the flavor. Whisk in a little of the reserved water from cooking the pasta, ¼ to ½ cup, which improves the texture of the sauce.
Step 6
Stir in the cheese with a wooden spoon until melted and combined. Add the pasta, stir to combine, and allow to gently simmer for a minute or two. Taste and adjust the seasoning if necessary.
Step 7
Divide between serving bowls. Garnish with fresh parsley and additional cheese.