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Creamy Mushroom Pasta in Instant Pot Recipe

4.7 from 118 reviews

This creamy mushroom pasta is a delicious and easy-to-make dish prepared in an Instant Pot. Featuring tender spaghetti cooked to perfection alongside sautéed cremini mushrooms in a rich, creamy sauce made with heavy cream and Parmesan cheese, it’s a comforting and flavorful meal ready in under 30 minutes.

Ingredients

Scale

Pasta and Broth

  • 8 ounces Spaghetti
  • 2 cups Vegetable Broth

Vegetables

  • 8 ounces Cremini Mushrooms, sliced
  • 2/3 cup Onion, diced
  • 2 cloves Garlic, finely diced

Fats and Dairy

  • 3 tablespoons Olive Oil, divided
  • 1/2 cup Heavy Whipping Cream
  • 1/2 cup Parmesan cheese (pecorino Romano works well too)

Seasonings and Garnishes

  • Salt and Pepper to taste
  • 1 tablespoon Lemon Juice
  • Parmesan cheese for garnish
  • Parsley leaves, chopped for garnish
  • Red Chili Flakes (optional)

Instructions

  1. Heat the Instant Pot: Set the Instant Pot to sauté mode and add 2 tablespoons of olive oil to heat.
  2. Sauté Mushrooms: Add the sliced mushrooms and cook for 4-5 minutes, stirring frequently until they release their moisture and turn golden brown. Remove mushrooms and set aside.
  3. Sauté Aromatics: Without cleaning the pot, add the remaining tablespoon of olive oil, then sauté diced onions and garlic for 2 minutes until fragrant. Turn off the sauté mode.
  4. Deglaze the Pot: Pour in the vegetable broth and scrape the bottom of the pot with a spatula to loosen any browned bits, preventing burning during pressure cooking.
  5. Add Pasta: Break spaghetti noodles in half and spread evenly in the pot, ensuring they are submerged in the broth.
  6. Pressure Cook: Close the lid, set the vent to sealing position, and pressure cook on high for 5 minutes—about 1 minute less than half the recommended stovetop pasta cooking time.
  7. Release Pressure: When cooking completes, perform a quick release to release steam manually.
  8. Add Cream and Cheese: Stir in the heavy cream and Parmesan cheese until fully melted and combined into a creamy sauce.
  9. Combine Mushrooms: Return the sautéed mushrooms to the pot and mix well with the pasta and sauce.
  10. Season and Finish: Adjust salt and pepper to taste, then stir in the lemon juice for brightness.
  11. Garnish and Serve: Top with additional Parmesan cheese, chopped parsley, and optional red chili flakes before serving.

Notes

  • You can substitute cremini mushrooms with white button mushrooms or portobello for variation.
  • Use pecorino Romano cheese instead of Parmesan for a sharper flavor.
  • The lemon juice adds a fresh contrast to the creaminess—do not skip.
  • Red chili flakes are optional if you prefer a little heat.
  • If preferred, chicken broth can be used instead of vegetable broth for non-vegetarian versions.
  • For a dairy-free version, substitute cream and cheese with plant-based alternatives.

Keywords: creamy mushroom pasta, instant pot pasta, vegetarian pasta recipe, easy mushroom recipe, one pot pasta