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Fall, Gluten Free, Recipes, Special Diets, Vegetables, Vegetarian
September 26, 2025

Creamy Sage Spaghetti Squash

5 | 3 reviews

Fall is here which means it’s time for all of my squash recipes to resurface! And when I think cozy squash dinners, this Creamy Sage Spaghetti Squash is always top of my list. It tastes like adult mac n’ cheese, but has a few extra elements to it that make it simple, but really special.

Prep Time 15 minutes mins
Cook Time 45 minutes mins
Course Main Course, Side Dish, Vegetable
Cuisine American, Fusion
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Fall is here which means it’s time for all of my squash recipes to resurface! And when I think cozy squash dinners, this Creamy Sage Spaghetti Squash is always top of my list. It tastes like adult mac n’ cheese, but has a few extra elements to it that make it simple, but really special.

First, sage fries in a bit of butter to both infuse the butter with flavor, but then crisp up the sage. This gives us a really great base to add our nutritional yeast, which serves both as a thickener and as the ingredient that makes all of that delicious cheesy flavor in this spaghetti squash.

The whole thing needs one sheet pan and one skillet, which makes this a real contender on my simple dinners list. Plus, who doesn’t love spaghetti squash?

Table of contents

  • The ingredients you will need for this creamy spaghetti squash
  • What exactly is a béchamel sauce?
  • Tips and tricks on how to combine the sauce and squash
  • Serving and storage suggestions for this recipe
  • Looking for similar recipes?

The ingredients you will need for this creamy spaghetti squash

When the ingredients list for a recipe list is low, you know it’s because these ingredients do some heavy lifting. Here is what you will need:

  • 2 medium spaghetti squash, each weighing 2 pounds a piece when whole
  • 2 tablespoons salted butter
  • 8-10 sage leaves
  • Diamond Crystal kosher salt
  • 1/2 cup nutritional yeast
  • 2 tablespoons cornstarch
  • 2 1/2 cups whole milk
  • Freshly ground black pepper

What exactly is a béchamel sauce?

A béchamel sauce is one of the five French mother sauces, and in my opinion it’s the most simple. It’s simply a roux, so flour plus fat (usually butter) that is then thinned out with milk to make a creamy sauce.

In this recipe we are harnessing that technique, but instead of using flour to thicken the sauce, we are using nutritional yeast as a flavor builder and thickener. A little cornstarch helps out along the way and keeps everything gluten-free.

Tips and tricks on how to combine the sauce and squash

Spaghetti squash is a funny squash because of how it gets, well, spaghetti-y. If you’ve ever eaten one, you know the strands pull apart from the sides in a circle around the seeds, making it so that when you pull them from a cut half, they tend to just stick up in the air. While this makes them look like a muppet, it is great for us to make sure sauce gets into every spaghetti squash crevice.

My best tip for this creamy sage spaghetti squash is to pull the strands to that they are all still in the boat, but are spread out and detached from each other. Then the sauce will easily coat the strands and all you have to do is dive right in.

My second tip? Don’t do this while the squash is too warm. Otherwise you run the risk of the squash turning into mush when you pull it away from the skin. Let it cool a bit out of the oven!

Serving and storage suggestions for this recipe

This recipe is best served straight from the spaghetti squash boats, and it’s best stored that way, too!

If you are making this for a big dinner and are craving a bit more protein, I suggest serving it alongside a simple roast salmon or chicken, or a pot of Brothy Beans.

For storage, store these creamy spaghetti squash directly in their boats in an air-tight container. They will keep for 4-5 days in the fridge. A gentle reheat in the microwave or in the oven at 350°F is all you need to make them creamy again!

Looking for similar recipes?

I have a whole squash catalog that I love, here are a few favorites from the blog:

Honeynut Squash Ragu

This ragu uses sausage, honeynut squash, and a balance of aromatics to make a uniquely spicy, rich and savory ragu sauce. If you are a lover of hearty, comforting pasta recipes, this is the perfect pasta to whip up on a chilly night
Check out this recipe

Kabocha Squash and Fennel Soup

This soup is packed with flavor, and probably one of the best soups I've had this year. And I am not exaggerating. And that's because this soup uses technique to build flavor, from char-roasting the fennel and half of the squash to gather all their caramelized flavor, to toasting the farro before letting it boil into the soup, to finishing with heavy cream for the perfect texture. This soup uses everything I love about fall to create a rich, filling, and good -for-you meal.
Check out this recipe

Honeynut Squash Congee with Poached Fish

This comforting congee recipe is a new take on the classic rice porridge. It's simmered slowly, but the process takes half the time of traditional congee, due to us starting with white rice. And while congee typically uses chicken stock, this uses water and finishes with a poached fish on top. Making it fully pescatarian, and still a full meal.
Check out this recipe

Cheesy Butternut Squash Orzo

A little less work than risotto, but still starchy, creamy and just a *bit* on the cheesy side, this Butternut Squash Orzo is a load of comfort. It's lightly spiced, filled with flavor and extra smooth, using a blend of three melty cheeses that are sure to make this the coziest, cheesiest dinner you make this week.
Check out this recipe

And that’s it for this Creamy Spaghetti Squash with Crispy Sage!

If you make it, please tag me on Pinterest or Instagram so I can see! It’s my favorite thing to scroll through stories and see what you all are making.

And of course feel free to leave any questions, comments or reviews! This is the best place to reach me, and I’d love to hear from you <3

Creamy Spaghetti Squash with Crispy Sage

5 | 3 reviews
I love a spaghetti squash boat, and this one mimics mac n' cheese without there being any cheese in sight. But don't worry, milk, nutritional yeast and a small technique turns this from ordinary ingredients into a really wonderful, filling dinner.
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Prep Time 15 minutes mins
Cook Time 45 minutes mins
Servings: 4 servings
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Equipment

  • 1 chef's knife
  • 1 half sheet pan
  • 1 large sauté pan

Ingredients

  • 2 medium spaghetti squash, each weighing 2 pounds a piece when whole
  • 2 tablespoons salted butter
  • 8-10 sage leaves
  • Diamond Crystal kosher salt
  • 1/2 cup nutritional yeast
  • 2 tablespoons cornstarch
  • 2 1/2 cups whole milk
  • Freshly ground black pepper

Instructions 

  1. Begin by preheating your oven to 400°F. Halve and deseed the squash. Place them face down on a baking sheet and roast for 40-50 minutes, or until the interior flesh is soft. Remove from the oven and set aside.
  2. While the squash are roasting, prepare your sauce.
  3. Place a large sauté pan over medium heat and melt 2 tablespoons of butter. When the butter is fully melted, fry the sage leaves for 1-2 minutes, or until darkened a shade in color. Use tongs to pull them from the pan. Set the leaves on paper towels to cool and crisp up. Season the with a pinch of salt.
  4. Reduce the heat on the pan to medium-low. In a small bowl whisk together 1/2 cup nutritional yeast and 2 tablespoons cornstarch. Add this to the pan and mix with the butter until you have the consistency of wet sand.
  5. Stirring constantly, pour in the milk in 1/4 cup increments. Stir until the milk has combined with the nutritional yeast, forming a creamy sauce. Make sure each batch of milk is fully combined before pouring in the next. It will feel thin at first, but it will thicken.
  6. Taste the sauce and season with salt and pepper. When it looks like a smooth, creamy sauce, turn off the heat and let it sit for a few minutes to thicken.
  7. When the squash are out of the oven, flip them and gently pull the spaghetti strands away from the sides, loosening them up and creating a lot of pockets for sauce to fall into.
  8. Pour a heaping 1/2 cup of sauce over each squash half, top with 2-3 crispy sage leaves and enjoy.
Serving: 1 halfCalories: 281kcalCarbohydrates: 29gProtein: 13gFat: 13g

Hey! I’m Justine

A recipe developer, highly dedicated eater, and bread enthusiast with an archive of both savory and sweet.

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Comments

  1. Elizabethanne Avatar
    Elizabethanne
    10/4/2025
    Reply

    OK, I think I might be just absolutely genetically averse to Sage. What’s an herb you would substitute for in this recipe that might add the qualities that you appreciate in sage .
    Thank you!

    Reply
    1. Justine Avatar
      Justine
      10/8/2025
      Reply

      Rosemary is just as good!

      Reply
  2. Erika Avatar
    Erika
    10/8/2025
    Reply

    5 stars
    Honestly I love spaghetti squash, so this was already a hit for me before it started. But the sauce is so good, it got my toddler to eat spaghetti squash! The sage is a really nice touch as well. This will be a season staple in our house.

    Reply
  3. Sara l Avatar
    Sara l
    10/12/2025
    Reply

    5 stars
    A surprise hit! Even for my picky husband 🙂

    Reply
    1. Justine Avatar
      Justine
      10/12/2025
      Reply

      Love this!! So glad you enjoyed it 🙂

      Reply
  4. angieinalaska Avatar
    angieinalaska
    10/20/2025
    Reply

    5 stars
    This was delicious. I added barely sautéed mushrooms because I needed to used them up and added a bit of dried sage because I’m a fiend for it but it was so good.

    Reply

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Hey! I’m Justine

A recipe developer, highly dedicated eater, and bread enthusiast with an archive of both savory and sweet.

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