Creamy Leek Mushroom Pasta

Featured in Perfect Pasta Dishes.

This comforting dish brings together the sweetness of caramelized leeks, the earthiness of sautéed mushrooms, and a creamy gruyere sauce. Topped with pine nuts, it's the ultimate cozy vegetarian meal.
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Updated on Sun, 13 Apr 2025 10:59:18 GMT
A skillet filled with creamy pasta, mushrooms, and grated cheese. Pin it
A skillet filled with creamy pasta, mushrooms, and grated cheese. | cuisinegenial.com

This Caramelized Leek and Mushroom Gruyere Pasta will knock your socks off, and it only needs a handful of basic ingredients. The mix of sweet leeks, woodsy mushrooms, and the nutty taste of Gruyere creates a cozy meat-free meal that works any night of the week and puts a tasty spin on spring flavors.

What Makes This Meal Special

This pasta brings together rich, sweet, and savory in one amazing dish. When leeks get caramelized, they turn naturally sweet, while mushrooms add that hearty, earthy taste. The Gruyere pulls everything into a creamy, nutty harmony. It's fancy enough for company but simple enough for Tuesday night dinner – tastes like a treat but isn't hard to make.

What You'll Need For Your Pasta

  • Pasta: 1 pound pappardelle or fettuccine.
  • Leeks: 3 large ones, cleaned and cut into thin slices (just use white and light green bits).
  • Mushrooms: 1 pound of various types, sliced up.
  • Butter: 4 tablespoons to cook your veggies.
  • Olive Oil: 2 tablespoons for the pan.
  • Gruyere Cheese: 2 cups freshly grated up.
  • Heavy Cream: 1 cup.
  • White Wine: 1/2 cup to scrape up the yummy bits.
  • Fresh Thyme: 2 teaspoons, chopped up small.
  • Salt and Pepper: However much you like.
  • Fresh Parsley: Chopped up for the top.

Cooking Your Mushroom Leek Pasta

Get Those Leeks Going
Mix butter and olive oil in a big skillet over medium heat. Toss in your leek slices and let them cook slowly for 20-25 minutes. Stir now and then until they turn golden and sweet.
Add Your Mushrooms
Throw mushrooms in with those caramelized leeks. Cook until they're golden brown and all their juice has bubbled away, about 8-10 minutes. Sprinkle with thyme, salt, and pepper.
Make It Saucy
Splash in the white wine, scraping the pan bottom for all those tasty bits. When the wine cooks down, pour in the heavy cream and let it bubble until it thickens up a bit.
Pasta Time
Boil your pasta in salty water until it's still got a little bite. Save a cup of that starchy water before draining. Mix pasta with your sauce, adding splashes of pasta water if it needs loosening up.
Put It All Together
Mix in your grated Gruyere until everything's melty and creamy. Scatter fresh parsley on top and maybe some extra cheese if you're feeling fancy.
A bowl of creamy pasta with sautéed mushrooms and melty cheese, shown in closeup. Pin it
A bowl of creamy pasta with sautéed mushrooms and melty cheese, shown in closeup. | cuisinegenial.com

Keeping It Fresh

You can get the sauce ready a day early and warm it up gently before mixing with fresh pasta. Leftover pasta keeps in the fridge for up to 3 days in a tight container. When you warm it up, add a little splash of heavy cream to bring back that silky smoothness.

Frequently Asked Questions

→ What types of mushrooms work best?
Although oyster mushrooms are recommended, cremini, button, or chanterelle mushrooms are good options too. Each brings its own unique flavor and texture.
→ Can I prepare this dish in advance?
You can make the sauce ahead (steps 1-4) and reheat it later. Just toss it with freshly cooked pasta when you're ready. Perfect for planning ahead!
→ Why is pasta water important?
The starchy water helps make the sauce silky and helps it stick to the pasta better. It's also a quick trick to thin out a sauce if needed.
→ Can I swap out the gruyere cheese?
If gruyere isn't available, try fontina, raclette, or mild white cheddar. The flavor will change slightly, but it'll still be velvety and delicious.
→ What's the benefit of caramelizing the leeks?
Caramelizing leeks makes them sweet and enhances their flavor. Adding sugar speeds things up and balances the savory parts of the dish.

Creamy Leek Mushroom Pasta

Tender pasta is smothered in a creamy gruyere sauce with golden-brown mushrooms and caramelized leeks. Finished with crunchy pine nuts on top.

Prep Time
15 Minutes
Cook Time
30 Minutes
Total Time
45 Minutes
By: Ferdaous

Category: Pasta

Difficulty: Intermediate

Cuisine: Italian

Yield: 4 Servings (4 bowls)

Dietary: Vegetarian

Ingredients

01 1 lb fettuccine.
02 2 tablespoons olive oil.
03 3 tablespoons butter (use separately).
04 4 garlic cloves, finely chopped.
05 3 leeks, medium-sized, tops removed, halved, and finely sliced.
06 2 sage leaves, fresh.
07 ¾ cup thick heavy cream.
08 ⅓ cup dry sherry wine.
09 1 tablespoon balsamic vinegar.
10 ½ cup gruyere cheese, grated.
11 ¼ cup toasted pine nuts.
12 ½ teaspoon regular salt.
13 1 teaspoon lemon zest.
14 ½ teaspoon sugar (granulated).
15 8 ounces oyster mushrooms.
16 1 teaspoon cracked black pepper.
17 1 cup pasta water (saved).

Instructions

Step 01

Pour olive oil and 2 tablespoons of butter into a big pan on medium. Drop in the sliced leeks and sprinkle with sugar and salt. Stir here and there to keep them from burning, cooking for about 20 minutes until they turn golden brown. Toss in a little water (1-2 tablespoons) if it looks dry.

Step 02

Pour in the sherry wine and let it simmer until the liquid is mostly gone. Move the cooked leeks to a dish and set them to the side.

Step 03

Add 1 more tablespoon of butter to the same pan you used before. Spread mushrooms evenly across the pan with some space between each. Let them sit undisturbed for 4 minutes to brown, then flip and do the same on the other side. Season with salt and pepper.

Step 04

Add garlic and sage to the mushrooms and stir for about a minute. Put the leeks back in, followed by the cream, lemon zest, and balsamic vinegar. Cook on low until the sauce thickens—just a couple of minutes. Adjust the taste with salt and pepper if needed.

Step 05

While working on the sauce, get your pasta cooked until it’s just firm to the bite. Save 1 cup of the water from cooking the pasta.

Step 06

Drop the fettuccine into the sauce along with the saved pasta water, grated cheese, and pepper. Stir everything until the cheese melts and the pasta is evenly coated in the creamy mix. Check the flavor and add more salt or pepper if you need to.

Step 07

Put portions of pasta into 4 bowls. Sprinkle the toasted pine nuts on top, and dig in right away.

Notes

  1. Oyster mushrooms can be swapped out for cremini, button, chanterelles, or a mix of different mushrooms.
  2. The sauce stays good if you make it in advance (steps 1-4). Just warm it back up when you want to mix it with the pasta.

Tools You'll Need

  • A big pan for sauteing.
  • Pot for boiling pasta.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains dairy.
  • Contains tree nuts (pine nuts).

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: ~
  • Total Fat: ~
  • Total Carbohydrate: ~
  • Protein: ~