12 oz pasta
2 large leeks, sliced
8 oz mushrooms, sliced
2 tbsp olive oil
2 cloves garlic, minced
1 cup heavy cream
1 ½ cups Gruyere cheese, shredded
Salt and pepper, to taste
Fresh thyme or parsley (optional)
Cook pasta until al dente; reserve 1 cup pasta water.
Caramelize leeks in olive oil for 8–10 minutes.
Add mushrooms and sauté until browned.
Stir in garlic, then add cream and simmer.
Melt Gruyere into the sauce, toss with pasta, and season to taste.