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Portabella Mushroom Pappardelle Pasta with Thyme

This simple Portabello Mushroom Pasta is made with a rich mushroom & thyme ragù. The sauce is a base of shallots, tomato paste, thyme and garlic. A splash of balsamic vinegar brings out the deep and rich tomato flavors in this mushroom sauce.

Course dinner, Pasta
Cuisine American, Italian
Keyword mushroom pasta, pasta recipe, vegetarian pasta
Prep Time 10 minutes
Cook Time 10 minutes
Total Time 20 minutes
Servings 4
Calories 320 kcal
Author OatandSesame


  • 8 ounces tagliatelle, pappardelle or other long flat noodle
  • Kosher salt
  • 2 Tbs olive oil
  • 2 medium shallots, finely diced (about 1/3 cup diced)
  • 4 large portobello mushroom caps, black gills scraped out then sliced into 1-inch pieces
  • 2 garlic cloves finely minced
  • 1 Tbs finely chopped fresh thyme
  • 1/4 tsp red chili flakes
  • 2 Tbs tomato paste
  • 2 Tbs unsalted butter (or non-dairy butter of choice)
  • 3 tsp balsamic vinegar
  • Parmigiano Reggiano, grated to top


  1. Bring a large pot of water to a boil and then add 2 tablespoons kosher salt. This salt will flavor the noodles.  Cook the pasta until al dente. Scoop out and RESERVE 1/2 cup of the pasta water, then drain the pasta.

  2. While your pasta is cooking, heat olive oil in a large skillet over medium heat. Once warm, add shallots and a pinch of Kosher salt and pepper. Sauté, stirring frequently, until the shallots are softened, but not browned.

  3. Add the mushrooms to the pan. Cook the mushrooms for a few minutes until they start to soften and darken in color. Stir in 1/2 teaspoon Kosher salt. Continue cooking until the mushrooms become tender and their liquid evaporates.

  4. Add the garlic, thyme, chili flakes, tomato paste, balsamic vinegar and butter to the mushrooms. Cook for 1 minute. 

  5. Add the 1/3 cup of pasta water and stir over medium heat until the mixture becomes saucy. Add the cooked pasta to the pan and toss gently with tongs to coat with the sauce, adding more pasta water if it's too dry. Taste for seasoning.

  6. Add grated Parmigiano cheese over the pasta and serve.

Nutrition Facts
Portabella Mushroom Pappardelle Pasta with Thyme
Amount Per Serving (1 g)
Calories 320
* Percent Daily Values are based on a 2000 calorie diet.