Kalyn's Kitchen

Slow Cooker Butternut Squash

This four-ingredient Slow Cooker Butternut Squash is a delicious buttery side dish that’s easy to make for a crowd. If you enjoy butternut squash you’ll love this method of cooking it in the slow cooker!

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Slow Cooker Buttery Butternut Squash for a Crowd found on KalynsKitchen.com

When most food bloggers start getting excited about pumpkin season, I’m eyeing the butternut squash in the store and eagerly looking forward to Roasted Butternut Squash. I learned to love butternut squash from my Grandmother Denny, who cut up the squash into serving size pieces, scraped out the seeds, wrapped it in foil, and roasted it until it was soft. Now I like to cut my butternut squash into cubes before I roast it, and I love roasted butternut squash that’s just tossed with olive oil and balsamic vinegar. But my grandma always served it with lots of melting butter, salt, and pepper, and I think I was channeling her when I came up with this Slow Cooker Butternut Squash that’s deliciously buttery and easy to make for a crowd or for a holiday meal.

This idea for butternut squash cubes “roasted” in the slow cooker came from the CrockPot Sweet Potatoes that I loved when I made them in my Crock-Pot Casserole Crock Slow Cooker (affiliate link). You can also definitely use a large oval slow cooker to cook the butternut squash, but I love how the casserole crock can go in the oven for 15-20 minutes to brown the edges, and it worked perfectly here.

I also think you could skip the butter and toss the squash with olive oil or coconut oil before you slow cook it if you want a vegan version. But no matter how you make this slow cooker buttery butternut squash, if you like butternut squash even half as much as I do, you’re going to love this for a treat! 

What ingredients do you need for this recipe?

  • butternut squash
  • butter
  • salt and fresh-ground pepper to taste

Peeling and Cutting up the Butternut Squash:

Follow my instructions for How to Peel and Cut Up a Butternut Squash, if you haven’t done this before. 

Can you make this recipe with pre-cut squash cubes?

Of course I can’t see through the computer so if you use pre-cut butternut squash cubes from the store I’m never going to know, but I promise that the squash you cut yourself has better flavor. But if cutting up the butternut squash isn’t happening at your house, you’ll probably need two of those packages of pre-cut butternut squash to make this recipe that makes eight servings.

Can you make this recipe with less butter?

Yes, I did use an indulgent amount of butter, because in my mind this is a special occasion recipe, but you certainly can use less butter if you prefer.

Slow Cooker Buttery Butternut Squash for a Crowd process shots collage

How to make Slow Cooker Butternut Squash:

(Scroll down for complete printable recipe, including nutritional information.)

  1. Cut the butternut squash into manageable sized pieces and then peel and scrape out seeds.
  2. Cut the squash into pieces, making cubes that are 1-2 inches in size. Cutting up the squash is the only part of the recipe that takes any time.
  3. Spray the Crock-Pot Casserole Crock Slow Cooker (affiliate link) or other large slow cooker with non-stick spray, add the squash cubes, dot with pieces of butter, and season with salt and fresh-ground black pepper.
  4. Cook on high for about 3 hours, or until the squash is soft.
  5. I mashed the cooked squash with an old-fashioned potato masher (affiliate link), and browned it a little in a 400F/200C oven. (I don’t recommend oven browning unless your slow cooker specifically says it is safe.
  6. Then I added a little more butter when I served it.
  7. Serve hot and enjoy!

More Butternut Squash Goodness:

Check out My Top Ten Butternut Squash Recipes for lots more delicious ideas for butternut squash!

Weekend Food Prep:

This recipe has been added to a  category called Weekend Food Prep  to help you find recipes you can prep or cook on the weekend and eat during the week!

Slow Cooker Butternut Squash thumbnail image of cooked squash in slow cooker

Slow Cooker Butternut Squash

Yield 8 servings
Prep Time 15 minutes
Cook Time 3 hours
Total Time 3 hours 15 minutes

Slow Cooker Butternut Squash is buttery and delicious and if you like butternut squash you're going to love this way of cooking it.


  • 1 large whole butternut squash, 4-5 pounds before cutting (see notes)
  • 1 stick butter (see notes)
  • salt and fresh-ground pepper to taste


  1. If you're never cut up a big squash like this, I'd read How to Peel and Cut Up a Butternut Squash before you start.
  2. Cut the squash into pieces to make it easier to handle, then scrape out seeds, peel with a vegetable peeler, cut into strips, and cut into cubes.
  3. Spray the inside of your slow cooker with non-stick spray, add the squash cubes in an even layer, dot with desired amount of butter, season with salt and fresh-ground black pepper, and cook on HIGH for about 3 hours (or until squash feels soft when you pierce it with a fork.)
  4. If you want a vegan version or don't want to use butter, toss the cut squash cubes with 3-4 tablespoons of olive oil or coconut oil, season with salt and fresh-ground black pepper, and cook as above.
  5. When the squash is soft, I recommend you mash it with a potato masher (affiliate link) and then put the Casserole Crock into a 400F/200C oven to brown the edges (and dry it out slightly), but this is definitely optional. (Be sure your slow cooker can go in the oven if you don't have the Casserole Crock!)
  6. Serve hot, with additional butter added just before serving if desired.
  7. This will keep in the fridge for a day or two and can be reheated successfully.
  8. Some people have reported freezing the cooked squash, but freezing changes the texture a bit and I prefer it when it's just been refrigerated.


I used the Crock-Pot Casserole Crock Slow Cooker (affiliate link) to cook this butternut squash, but you can use a large oval slow cooker if that's what you have. You might have to skip the final step of browning the squash in the oven if your slow cooker insert is not oven-safe; check the manufacturer's information.

Choose a squash that has a long neck and short body if you can. Use more or less butter to taste, or toss the cut squash cubes with olive oil or coconut oil if you prefer a vegan version.

Butternut squash is not low in carbs, but it does have quite a bit of fiber and has a moderate glycemic index ranking.

This recipe tested by Kalyn and Kara and inspired by Spicy CrockPot Sweet Potatoes and memories of the buttery butternut squash that Grandma Denny used to make!

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 215Total Fat: 12gSaturated Fat: 6.3gUnsaturated Fat: 3.5gCholesterol: 30mgSodium: 175mgCarbohydrates: 30gFiber: 9.1gSugar: 5.6gProtein: 2.7g

If you make this recipe I'd love to hear how it turns out. Leave a star rating or share on social media with the hashtag #KALYNSKITCHEN, thanks!

Slow Cooker Butternut Squash thumbnail image of cooked squash in slow cooker

Low-Carb Diet / Low-Glycemic Diet / South Beach Diet Suggestions:
Butternut squash isn’t suitable for low-carb diets, but it’s approved for Phase 2 or 3 of the original South Beach diet (without butter!) It’s an occasional indulgence for me, although butternut squash has a medium glycemic index, but a low glycemic load. This Slow Cooker Butternut Squash is a dish where I’d watch my portion size, especially for this version with butter.

Find More Recipes Like This One:
Use Side Dishes or Butternut Squash Recipes to find more recipes like this one. Use the Diet Type Index photo index pages to find more recipes suitable for a specific eating plan. You might also like to Follow Kalyn’s Kitchen on Pinterest to see all the good recipes I’m sharing there. You can find more Slow Cooker / Instant Pot Recipes on my other site.

Historical Notes for this Recipe:
This recipe was posted in 2017. It was last updated with more information in 2021.

Pinterest image of Slow Cooker Butternut Squash

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    6 Comments on “Slow Cooker Butternut Squash”

  1. Pingback: Lemon and Honey Glazed Carrots - The Food Charlatan

  2. Pingback: Recipes for the Crock-Pot Casserole Crock Slow Cooker! - Slow Cooker or Pressure Cooker

  3. I'd rather have butternut squash than pumpkin any day. This will be a great side dish on a Thanksgiving menu.

  4. I prefer to place the whole squash on a baking sheet and roast at 350 until it gets all soft, because I love the caramelization it gets. Adds a depth of flavor.