Creamy Vegan Alfredo Sauce for Instant Pot: Simple Plant-Based Recipe

Dinner in 20 minutes or less! Meet a silky, creamy Alfredo sauce made with cauliflower, a touch of cashews and plenty of garlic. Serve with fettuccine and steamed broccoli for a quick, satisfying meal that won’t weigh you down.

vegan alfredo fettucine on two plates

This Instant Pot Vegan Alfredo is simple, fast and remarkably creamy. It combines cooked cauliflower and raw cashews to create a rich but light dairy-free sauce. If you prefer an ultra-decadent cashew-only version, try the recipe labeled “Vegan Alfredo” that uses only cashews for an even creamier result.

vegan alfredo sauce with fettucine on a fork

I hope you love this Alfredo Sauce as much as I do. It’s:

  • Incredibly flavorful—“lick the blender” good
  • Kid-friendly and approachable
  • Made from whole plant foods
  • Rich and creamy without feeling heavy
  • Quick & easy, especially in the Instant Pot
  • Only 5 main ingredients

No Instant Pot? No problem—below are both Instant Pot and stove-top instructions so you can make this sauce almost as quickly on the stovetop.

vegan alfredo sauce being poured in a pot of fettucine noodles

More creamy vegan pasta ideas

  • The Best Vegan Alfredo Sauce (all cashews)
  • Creamy Vegan Carbonara
  • The Best Vegan Mac and Cheese
  • Tuscan Vegan Gnocchi

vegan alfredo with fettucine on two plates

vegan alfredo fettucine on two plates

Instant Pot Vegan Alfredo Sauce

Made in the Instant Pot (or on the stove), this Vegan Alfredo Sauce is rich, creamy and made with whole food, plant-based ingredients. It’s great on pasta or as a topping for baked potatoes.
Prep: 10
Cook: 3
Total: 13
Servings: 6 servings
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Ingredients

  • 2 tablespoons olive oil
  • 8 cloves garlic, minced
  • 6 cups cauliflower florets (fresh or frozen)
  • 3/4 cup raw cashews
  • 3 cups vegetable broth
  • 1/2–1 teaspoon salt, to taste
  • 1 pound (16-oz) cooked fettuccine pasta (whole grain or gluten free if needed)
  • Optional: steamed broccoli, kale or green peas

Instructions

Instant Pot Instructions:

  • Select the sauté function on the Instant Pot. Add the olive oil and minced garlic and cook 1–2 minutes until fragrant, taking care not to let the garlic burn.
  • Turn off sauté. Add the cauliflower florets, cashews and vegetable broth. Seal the lid and cook on high manual pressure for 3 minutes.
  • When the time is up, carefully release the pressure. Use a towel or utensil to protect your hand from steam if needed. You can also let the pressure release naturally if you prefer.
  • Transfer the cooked mixture to a blender, add salt and blend until completely smooth. Pour the sauce over the cooked pasta and stir to combine. If the sauce is too thick, add a few tablespoons of water at a time until you reach the desired consistency. Serve immediately with steamed broccoli, kale or peas if desired.

Regular (Non-Instant Pot) Instructions:

  • In a large pot, sauté the garlic in olive oil for a few minutes until fragrant. Add the cauliflower, cashews and vegetable broth. Bring to a boil, then simmer for 10–15 minutes until the cauliflower is tender. Transfer to a blender and blend until very smooth. Return to the pot, season with salt to taste and serve over pasta.

Video

Notes

  1. This sauce freezes well. Freeze in small glass or BPA-free containers, leaving an inch for expansion. Reheat in the microwave, on the stovetop, or in the Instant Pot.
  2. Use gluten-free pasta if needed. This sauce works well with many pasta shapes and also makes a tasty topping for baked potatoes.
  3. If you have a nut allergy or prefer to omit cashews, the sauce will still work but be slightly less creamy; reduce the amount of vegetable broth or try substituting cooked white beans for the cashews.
  4. This sauce pairs beautifully with pasta and steamed broccoli or cooked kale.
  5. Nutritional information applies to the sauce only and will vary depending on the pasta and vegetables you add.

Nutrition

Serving: 1serving | Calories: 167kcal | Carbohydrates: 13g | Protein: 5g | Fat: 12g
Course: Entree
Cuisine: Italian
Author: Nora Taylor
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