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Home / Recipes

Butternut Squash Pasta Sauce

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By: Madeline Tague

Updated: February 12, 2025

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Make a creamy vegan Butternut Squash Pasta Sauce with just a few simple ingredients. This simple recipe makes for the perfect fall comfort food.

Above view of butternut squash pasta in a serving bowl

One-pot

Easy cleanup

You’ll Learn: The surprising power of roasted veggies for creamy, dairy-free sauces

Worth It: It builds a freezer stash for stress-free meals later

Bonus: One bag of frozen squash goes a long way

Above view of butternut squash pasta in a serving bowl

A healthy fall Butternut Squash pasta

Butternut squash is one of my favorite fall ingredients because it is so versatile. It is great roasted on its own, but I like it best blended into sauces and soups.

I decided to roast the squash with tomatoes, onions and simple seasonings to give the sauce a deeper flavor. Once roasted, the veggies are blended with pasta water to make a creamy smooth sauce.

For another roasted veggie sauce, you can try this roasted veggie pasta sauce next.

What kitchen tools will I need to make this Butternut Squash Pasta Sauce?

  • Sheet pan
  • Parchment
  • Measuring cups
  • Measuring spoons
  • Liquid measuring cup
  • Large pot
  • Blender
  • Mixing spoon

What ingredients will I need to make this creamy vegan pasta sauce?

You will be amazed at how easy it is to make this healthy butternut squash pasta with just a few simple ingredients.

  • Frozen cubed butternut squash
  • Fresh chopped tomato
  • Yellow onion
  • Olive oil
  • Salt
  • Pepper
  • Dried thyme
  • Pasta
  • Pasta water reserved from cooked pasta
Above view of ingredients for butternut squash pasta sauce

Why use frozen butternut squash instead of fresh?

The only reason I use the frozen butternut squash is because it makes things way easier and saves time! I hate to peel, deseed, and chop fresh butternut squash.

I find it difficult and time consuming. Plus, frozen butternut squash is normally very affordable. It is most commonly available in the freezer section during the fall so I usually stock up on a few bags that I can use throughout the year.

If you prefer to use fresh butternut squash, that will work just fine! Follow the same steps as you would with the frozen squash.

Let’s make some Butternut Squash Pasta Sauce!

Step 1: Roast veggies in the oven

To begin, preheat oven to 450F and line a baking sheet with parchment paper. Then, place frozen cubed butternut squash, chopped tomatoes and sliced onion on the baking sheet.

Next, drizzle olive oil on top and season with salt, pepper, and thyme. Then, mix to cover the vegetables evenly with oil and seasonings.

Bake at 450F for 20 minutes.

Step 2: Cook pasta and reserve pasta water

Then, while the veggies bake, cook the pasta according to package instructions. Before you drain the cooked pasta reserve 1/3 cup of the pasta water and place in a blender.

Step 3: Blend sauce and mix with pasta

Next, take the cooked veggies hot from the oven and blend with the pasta water until a smooth sauce remains.

Finally, pour the sauce over the cooked pasta and toss to coat. Serve immediately with parmesan cheese or plant based parm alternative. 

Step 4: Enjoy!

How long will this plant based butternut squash pasta keep in the fridge?

I recommend storing the cooked pasta and sauce separately for meal prep. You can keep the cooked sauce in the fridge for up to 7 days. If you are eating some of the pasta immediately, you can toss some of the pasta in the sauce while its hot and store the rest separately.

Check out these other veggie pasta recipes!

  • Mushroom Alfredo Pasta
  • Asparagus Lemon Garlic Pasta
  • Baked Feta and Broccoli Pasta
  • Spicy Pumpkin One Pot Pasta

If you liked this recipe, try this Creamy Shredded Chicken Pasta Sauce next!

You can find the full recipe below. If you make this recipe, please rate and review it in the comments, or share it with me on Instagram!

You can find the full recipe below. If you make this recipe, please rate and review it in the comments, or share it with me on Instagram!

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Recipe

Butternut Squash Pasta Sauce

4.93 from 51 votes
A creamy vegan butternut squash pasta sauce made with simple healthy ingredients.
Recipe By: Madeline Tague
Prep: 10 minutes minutes
Cook: 30 minutes minutes
Print Review Pin It SaveSaved!
Servings: 6 servings

Ingredients

  • 16 oz bag of frozen diced butternut squash
  • 1.5 cups fresh chopped tomatoes
  • 1/2 yellow onion
  • 2 tbsp olive oil
  • 1 tsp salt
  • 1/4 tsp black pepper
  • 1/2 tsp dried thyme
  • 1 lb pasta
  • 1/3 cup pasta water reserved from cooked pasta
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Instructions

  • Preheat oven to 450F and line a baking sheet with parchment paper
  • Place frozen cubed butternut squash, chopped tomatoes and sliced onion on the baking sheet
  • Drizzle olive oil on top and season with salt, pepper, and thyme 
  • Mix to cover the vegetables evenly with oil and seasonings
  • Bake at 450F for 20 minutes
  • While the veggies bake, cook the pasta according to package instructions
  • Before you drain the cooked pasta reserve 1/3 cup of the pasta water and place in a blender
  • Take the cooked veggies hot from the oven and blend with the pasta water until a smooth sauce remains
  • Pour the sauce over the cooked pasta and toss to coat
  • Serve immediately with parmesan cheese or plant based parm 

Nutrition Information

Serving: 6g, Calories: 367kcal (18%), Carbohydrates: 68g (23%), Protein: 11g (22%), Fat: 6g (9%), Saturated Fat: 1g (6%), Polyunsaturated Fat: 1g, Monounsaturated Fat: 4g, Sodium: 398mg (17%), Potassium: 538mg (15%), Fiber: 5g (21%), Sugar: 5g (6%), Vitamin A: 8350IU (167%), Vitamin C: 22mg (27%), Calcium: 61mg (6%), Iron: 2mg (11%)

This website provides approximate nutrition information for convenience and as a courtesy only. Nutrition data is gathered primarily from the USDA Food Composition Database, whenever available, or otherwise other online calculators.

Did you make my Butternut Squash Pasta Sauce?

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Madeline Tague

Hi, I’m Madeline! I am so excited to share my healthy and approachable recipes with you. Here you will find simple, comforting recipes that the whole family will enjoy. Turn on your favorite playlist or podcast and let’s get cooking!
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4.93 from 51 votes

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Recipe Rating




149 responses

  1. Jocelyn
    November 21, 2025

    5 stars
    Made this recipe and absolutely loved it! As a breastfeeding mom who has had to give up dairy this hit the spot and was a substitute that hit the spot. Going to make it again for Thanksgiving. Any suggestions for how to bake with a breadcrumb topping?

    Reply
    1. Madeline
      November 22, 2025

      I would cook the pasta two minutes less and try 350 degrees for about 20 minutes, maybe up to 30, just watch it.

      Reply
  2. Valerie Russo
    October 20, 2025

    5 stars
    This dish was absolutely delicious, really creamy and very filling!

    Reply
    1. Madeline
      October 22, 2025

      Thanks, Valerie!

      Reply
  3. Einar
    March 2, 2025

    4 stars
    Made it just last night for dinner. It was very good, but it was just missing a little something. I was a formally trained Chef for 38 years, and as my own rule I always make a new recipe as it is written. Next time I think that I will try adding some different seasonings, like nutmeg or a bit of garlic and a splash of red wine.
    Don’t get me wrong it was very good, but as they say: different strokes for different folks.

    Reply
  4. Kim Pabla
    January 21, 2025

    5 stars
    Love this recipe! Can I freeze the prepared sauce even though I have used froze butternut squash?

    Reply
    1. Madeline
      January 21, 2025

      Yes! That should be fine.

      Reply
  5. Stella
    January 16, 2025

    5 stars
    Very delicious! My grocery store only had 12 oz bags of butternut squash left so I fluffed it up by using a whole onion. I served the pasta with wild mushroom chicken sausage for more protein 🙂

    Reply
    1. Madeline
      January 17, 2025

      Yum! Sounds amazing!

      Reply
  6. Mary Jo
    December 4, 2024

    5 stars
    Made this tonight – it was wonderful!

    Reply
    1. Madeline
      December 5, 2024

      Fantastic! Glad you liked it.

      Reply
  7. Jenney Meyers
    October 26, 2024

    I know you said freezing is an option for making ahead. What about canning?

    Reply
    1. Madeline
      October 28, 2024

      I have not tested this recipe for canning.

      Reply
    2. Sharon
      November 19, 2024

      Jenney, you can only pressure can butternut squash chunks, never puree. It’s too dense and the center of the jar doesn’t come up to temp to kill the bacteria and evacuate the air. Can the chunks instead, then make the sauce later.

      Reply
  8. Yvonne
    September 28, 2024

    Added about 4 roasted garlic cloves to this recipe (my family loves garlic ) & was amazing

    Reply
    1. Madeline
      September 30, 2024

      I’m so glad you liked it! You can never have enough garlic!

      Reply
  9. Rachel
    September 1, 2024

    5 stars
    This was so easy and delicious! I used tomatoes and a butternut squash I grew in my own garden and it turned out great with the fresh veggies! I am definitely making it again.

    Reply
    1. Madeline
      September 2, 2024

      Yum! So glad to hear it. Thanks, Rachel!

      Reply
    2. David
      December 17, 2024

      5 stars
      Perfect! Made half of recipe for two people. Delicious! Added small can of sliced mushrooms to roasting tray, used a blender first time in forever. Added usual butter and bit of sour cream to tortellini after draining. Served hot with side of garlic toast, topped with freshly grated parmesan. Thank you so much!

      Reply
  10. Reagan Roy
    August 29, 2024

    5 stars
    This meal was SO yummy! My toddler loved it and so did I! 🙂

    Reply
    1. Madeline
      August 30, 2024

      So glad you both loved it! Thanks for the review!

      Reply
  11. Bryanna Baker
    August 2, 2024

    Hello. I have an abundance of butternut squash in my garden. If I was to make this sauce would it be freezable? I’m thinking of freezing it in masonry jars but not sure how it will taste after freezing.

    Reply
    1. Madeline
      August 2, 2024

      Hi! Yes, be sure to cool completely before putting a lid on and leave a few centimeters of space at the top for expansion.

      Reply
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