3medium leekstops removed, cut in half and thinly sliced
½teaspoonsalt
½teaspoongranulated sugar
⅓cupsherry wine
8ouncesoyster mushrooms
4garlic clovesminced
2sage leaves
¾cupheavy cream
1tablespoonbalsamic vinegar
1teaspoonlemon zest
1poundfettuccine
1cupreserved pasta water
½cupgrated gruyere
1teaspoonblack pepper
¼ cuptoasted pine nuts
Instructions
Heat 2 tablespoons olive oil and 2 tablespoons butter in a large saute pan over medium heat. Add sliced leeks and season with ½ teaspoon salt and ½ teaspoon sugar. Cook until golden and caramelized, about 20 minutes, stirring occasionally. If the pan gets too dry, add 1-2 tablespoons of water.
Add sherry and continue to cook until the wine has reduced. Remove leeks from the pan and set them aside.
In the same pan, melt another tablespoon of butter. Spread mushrooms in an even layer, giving them plenty of space in between. Let them sit until browned, about 4 minutes. Flip and continue to brown on the other side. Season with salt and pepper.
Add minced garlic and sage and saute for 1 minute. Add back leeks along with ¾ cup heavy cream, balsamic vinegar, and lemon zest. Bring to a simmer and continue to cook until thickened, about 2-3 minutes. Season the sauce with salt and pepper.
Meanwhile, cook fettuccine until al dente. Reserve 1 cup of the cooking pasta water.
Add fettuccine, 1 cup reserved pasta water, gruyere, and black pepper to the sauce, tossing to coat. Simmer for 2 minutes or until cheese is melted and the pasta is well coated. Give a final seasoning with salt and pepper.
Portion pasta into 4 bowls and garnish with toasted pine nuts. Serve immediately.
Notes
Although I used oyster mushrooms, you can substitute them with another type of mushroom such as cremini, button, chanterelle, or a mixture of mushrooms.If preparing the dish ahead of time, make the sauce following steps 1-4. Reheat it when ready to toss with the pasta.