Mashed Butternut Squash with Garlic Butter
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My go-to recipe for mashed butternut squash is perfect for the holidays or any time of year. If you’re looking for an alternative to overly-sweetened casseroles, this recipe is for you! Transform naturally sweet roasted butternut into a smooth, creamy puree, with seasoned garlic butter and a splash of heavy cream.
I don’t mind saying that this basic mashed butternut squash recipe defies expectations (but not if we’re not talking about this super-comforting creamy butternut squash pasta).
I left out added sugar and made it extra-savory by adding just a touch of cream and a a swirl of garlic butter.
Every fall I stock up on all the colorful gourds I can carry. The best ones are hard winter squash for cooking with their colorful rinds and sweet orange flesh that make me feel like it’s my favorite season.
Butternut squash tastes even better with some of my favorite Italian-ish ingredients, like garlic, olive oil, red pepper, and butter.
Recipe ingredients
- 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: You’ll need less than a 1/4 cup. To go easier 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
Once you get past the anxiety of fussing with a hard butternut squash, you’ll get better and faster at prepping and cutting it.
1. Place your squash on a cutting board. Using a large chef’s knife, slice off a thin piece from the top and bottom. 2. Cut the squash in half at the point where the straight part of the neck meets the rounded bulb section.
3. Stand the squash pieces up on the cut end and slice straight down to cut it in half.
Scoop the seeds out with a spoon4. Peel off the skin with a swivel vegetable peeler.
5. Slice the sections into 1-inch wide pieces, then 6. Turn them crosswise and cut them into 1-2-inch pieces.
Mashed butternut squash: Recipe rundown
- First, roast the squash: Toss the squash with olive oil and salt on a baking sheet, then bake for about 25 minutes at 400 degrees.
2. Put the baked squash in a food processor bowl and pulse with some of the garlic butter and cream. 3. Puree until the consistency is smooth – this will happen quickly so keep your eye on it. Instead of using a food processor, you can transfer the squash to a mixing bowl and mash it with a potato masher or immersion blender. 
4. 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.
Ideas for leftovers
If you happen to have any extra squash puree, the good news is that it tastes great as a leftover and will keep 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 crunchy toasted breadcrumbs.
- Stir a cup or so of broth or water into the puree and heat in a saucepan to make a quick 15-minute butternut squash soup.
Meal prep and storage tips
- Refrigerate the uncooked, peeled and chopped squash in an air-tight container up to 3 days before baking.
- The baked butternut squash can be prepared 3-5 days ahead. Reserve the 2 tablespoons garlic butter separately.
- Warm at 325 degrees in a covered baking dish for 15-20 minutes and top with the butter before serving.
Mashed Butternut Squash with Garlic Butter
Equipment
Ingredients
- 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 pepper
- ¼ teaspoon ground nutmeg
- 3 tablespoons (45 ml) heavy cream
- Chopped Italian parsley, for serving
Instructions
- 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.
Baking and mashing
- 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, red pepper 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.
Karen’s Notes and Tips
- To save time, buy prepared (peeled and diced) butternut squash. You’ll need 4-5 cups. 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 of 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.
- Mashed butternut squash can be frozen up to 3 months. Thaw overnight in the refrigerator.
Nutrition
Nutrition facts are calculated by third-party software. If you have specific dietary needs, please refer to your favorite calculator.
Hey, I’m Karen
Creator of Familystyle Food
I’m a food obsessed super-taster and professionally trained cook ALL about creating elevated dinners with everyday ingredients. Find simplified recipes made from scratch and enjoy incredibly tasty food! Read more about me here.
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Hi, can I prepare the mash a week before and freeze it?
Yes, you can. Warm the thawed squash at 325 degrees in a covered baking dish for 15-20 minutes and top with the butter before serving.