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Mashed Butternut Squash with Garlic Butter

5 from 1 vote

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This is my go-to recipe for savory mashed butternut squash, perfect for the holidays or any time of year. Diced butternut squash baked with olive oil is an alternative to overly-sweetened casseroles. It’s naturally sweet and makes a smooth, creamy puree. The Italian-style spiced garlic butter takes this dish over the top!

Image of a ceramic serving bowl full of mashed butternut squash topped with melted butter, chopped parsley and nutmeg.

This recipe takes basic mashed butternut squash recipe to the next level — it has a savory flavor profile (with no added sugar) with a lovely, creamy texture that tastes ever-so-slightly indulgent.

You don’t really need to do a whole lot to a butternut squash to make it taste good. If the thought of mashed butternut squash makes you want to yawn, you must try this!

Every fall I stock up on all the gourds I can carry. The best ones are hard winter squashes with their colorful rinds and sweet orange flesh.

Image of a butternut squash on its side on a blue plastic cutting board.
Butternut squash and my favorite dishwasher-safe cutting board.

I cook things like pasta with delicata squash, roasted honeynut squash, and even a butternut squash salad

But I still end up wondering what else to do with butternut squash, usually because they last so long on my counter. Making a puree is almost a no-brainer, and it’s far from boring when you season it up just a little!

Ingredients you need for the recipe:

Butternut squash goes so well with some of my favorite Italian-ish ingredients, like garlic, olive oil, chili and butter.

  • Butternut squash: You’ll need 3 pounds of squash. To save prep time, look for peeled and diced squash in the produce section of the grocery store. I’ve also tested this recipe with frozen, cubed butternut squash and it works great!
  • Fresh garlic
  • Extra virgin olive oil: For roasting the squash.
  • Butter: Salted or unsalted butter adds a rich, nutty flavor to the squash.
  • Heavy cream: To ease up on dairy, you can also use a plant-based option such as plain unsweetened oat milk or almond milk.
  • Spices: Ground nutmeg and crushed red chili flakes.
  • Optional: Parmesan cheese — I didn’t use any grated cheese when I made this, but it would be a perfect garnish.

How to prep butternut squash for roasting:

Once you get past any fear of fussing with a butternut squash, you’ll get better and faster at prepping.

  • Place your squash on a cutting board. Using a large chef’s knife, slice off a thin piece from the top and bottom.
  • Cut the squash in half at the point where the straight part of the neck meets the rounded bulb section.
  • Stand the squash pieces up on the cut end and slice straight down to cut it in half.
  • Scoop the seeds out with a spoon.
  • Peel off the skin with a swivel vegetable peeler.
  • Slice the sections into 1-inch wide pieces, then turn them crosswise and cut into 1-2-inch pieces.
  • Toss the squash with olive oil and salt, then bake for about 25 minutes at 400 degrees.
  • Put the baked squash in a food processor bowl and pulse with some of the garlic butter and cream just until the consistency is the way you like it – this will happen quickly so keep your eye on it.

Instead of using a food processor, transfer the squash to a mixing bowl and mash it with a potato masher or immersion blender. 

To serve, spoon the mashed butternut into a serving bowl. Drizzle the remaining butter over and sprinkle with parsley to add fresh flavor and color to your dish.

Image of a ceramic serving bowl and spoon with mashed butternut squash topped with melted butter, chopped parsley and nutmeg.

How to enjoy leftover mashed butternut squash

If you happen to have any extra squash puree, the good news is that it tastes great as a “leftover” and will last 3-5 days in the refrigerator. Here are some ideas for how to use it:

  • Use it as a stuffing for ravioil or other filled pasta.
  • Make it the base of a casserole, topped with panko crumbs or herbed breadcrumbs.
  • Stir a cup or so of broth or water into the puree and heat in a saucepan to make a quick, creamy soup.
  • Mashed butternut squash can be frozen up to 3 months. Thaw overnight in the refrigerator.

Meal prep and storage ideas:

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Mashed Butternut Squash with Garlic Butter

Karen Tedesco
A go-to recipe for savory mashed butternut squash (no sugar added), whipped with an Italian-style spiced garlic butter that takes this dish over the top!
Print Pin
5 from 1 vote
Prep Time 25 mins
Cook Time 25 mins
Total Time 50 mins
Course Vegetables
Cuisine Vegetarian
Servings 6 servings


  • 3 pounds (1.35 kg) butternut squash, about 1 large
  • 3 tablespoons (45 ml) extra virgin olive oil
  • 1 teaspoon kosher salt
  • 3 tablespoons (45 g) butter
  • 1 garlic clove, thinly sliced
  • ½ teaspoon crushed red chili
  • ¼ teaspoon ground nutmeg
  • 3 tablespoons (45 ml) heavy cream
  • Chopped Italian parsley, for serving


  • Preheat the oven to 400 (200C) degrees.
  • Prep the butternut squash: On a cutting board, slice ¼-inch off the stem and bottom with a large, sharp knife. Cut the squash in half at the point where the straight part of the neck meets the bulb section. Slice both sections in half. Scoop out the seeds. Peel off the skin with a swivel peeler, then cut the squash into 1-2-inch cubes.
  • Put the squash in a large baking pan or dish. Drizzle with the olive oil and sprinkle with the salt. Toss together until the squash is evenly coated. Bake 25 minutes, until tender.
  • While the squash is baking, melt the butter in a small pan placed over low heat. Stir in the garlic, chili and nutmeg. Set aside.
  • Transfer the squash to a food processor work bowl. Add the cream and 2 tablespoons of the melted butter mixture. Pulse 30-45 seconds or until the puree is as smooth as you like( I prefer a slightly chunky texture).
  • Spoon the squash into a serving bowl and drizzle with the rest of the garlic butter. Sprinkle with the parsley and serve.


  • To save time, buy prepared (peeled and diced) butternut squash. Frozen butternut squash cubes will also work in this recipe.
  • Instead of using a food processor, transfer the roasted squash to a bowl and mash with a potato masher or immersion blender. 
  • The squash can be prepared up to 3 days ahead. Reserve the 2 tablespoons garlic butter separately. Warm the squash at 325 degrees in a covered baking dish for 15-20 minutes and top with the butter before serving.


Serving: 1serving | Calories: 196kcal | Carbohydrates: 27g | Protein: 3g | Fat: 10g | Saturated Fat: 3g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 6g | Cholesterol: 11mg | Sodium: 410mg | Potassium: 820mg | Fiber: 5g | Sugar: 5g | Vitamin A: 24281IU | Vitamin C: 48mg | Calcium: 124mg | Iron: 2mg
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Hey, I’m Karen

Creator of Familystyle Food

I’m a food obsessed super-taster and professionally trained cook ALL about making cooking fun and doable, with easy to follow tested recipes and incredibly tasty food! Read more about me here.

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