Butternut Squash Pasta Creamy Sauce

Featured in: Family Comfort Meals

Transform roasted butternut squash into an incredibly velvety sauce that coats every strand of pasta. The natural sweetness of caramelized squash pairs beautifully with aromatic sage and garlic, while cream adds luxurious richness. This one-hour dish delivers restaurant-quality results with simple techniques—roast vegetables until tender, blend until silky, then toss with al dente fettuccine for an unforgettable autumn meal that's both nourishing and indulgent.

Updated on Thu, 15 Jan 2026 08:55:00 GMT
Creamy butternut squash pasta in a white bowl, garnished with fresh sage and parsley, perfect for a cozy fall dinner. Pin this
Creamy butternut squash pasta in a white bowl, garnished with fresh sage and parsley, perfect for a cozy fall dinner. | plumoven.com

The first time I made this sauce, I stood in my kitchen absolutely confused about why the squash needed to roast first when I could just boil it faster. But when those caramelized edges came out of the oven and hit the blender with everything else, the difference hit me immediately. That roasting time transforms squash from simple vegetable into something that tastes like it has been simmering for hours. Now it is the only way I make it, even when I am impatient and hungry.

My roommate walked in while I was blending the sauce and asked what smelled so incredible. She stood there watching the steam rise off the blender, asking questions about roasting times and cream ratios. We ended up eating dinner standing at the counter, too hungry to bother setting the table, passing forks back and forth. That impromptu dinner became a monthly tradition once fall weather hits.

Ingredients

  • 1 medium butternut squash: The sweetness here is the foundation of the whole dish, so pick one that feels heavy for its size
  • 2 cloves garlic, unpeeled: Roasting them in their skins keeps them from burning and makes them squeeze out like soft butter
  • 1 small yellow onion: Diced small so it disappears into the sauce while adding that essential savory base
  • 1 tablespoon fresh sage: Fresh sage holds up better to roasting than dried, but use half the amount if you only have dried
  • 2 tablespoons fresh parsley: This bright garnish cuts through the rich sauce right at the end
  • 12 oz dried fettuccine or tagliatelle: The wider noodles hold onto this thick sauce better than spaghetti ever could
  • 2 tablespoons olive oil: One for roasting, one for sautéing the aromatics
  • 1/2 cup heavy cream: Full fat coconut milk works beautifully if you need it vegan, just expect a slightly nuttier finish
  • 1/3 cup grated Parmesan: The saltiness here balances the squashs natural sweetness perfectly
  • 3/4 cup vegetable broth: Start with less and add more as you blend to get the consistency exactly how you like it
  • Salt and black pepper: The roasted squash needs a generous hand with seasoning to really shine
  • Pinch of nutmeg: Optional, but it adds that warm background note people notice but cannot quite place

Instructions

Get the oven going:
Preheat to 400°F and line a baking sheet with parchment, because this sticky squash will cling to bare metal
Start the roasting:
Spread the cubed squash and unpeeled garlic cloves on the sheet, drizzle with 1 tablespoon olive oil, sprinkle generously with salt and pepper, then toss until everything is coated
Let the oven work:
Roast for 25 to 30 minutes, flipping halfway through, until the squash is fork tender and those edges are turning golden brown
Cook the pasta:
Boil a large pot of salted water and cook the pasta according to the package, but remember to reserve 1/2 cup of that starchy water before draining
Build flavor while the squash roasts:
Heat the remaining olive oil in a large skillet over medium heat and sauté the diced onion and sage until the onion is soft and fragrant, about 4 minutes
Make the magic happen:
Squeeze the roasted garlic from its skins, then blend it with the squash, sautéed onion and sage, vegetable broth, and cream until completely smooth
Finish the sauce:
Pour the sauce back into the skillet over low heat, stir in the Parmesan and nutmeg if using, then season with salt and pepper
Bring it together:
Add the cooked pasta to the sauce and toss gently, adding pasta water if the sauce needs loosening, then warm everything through for 2 to 3 minutes
Serve it up:
Plate immediately topped with chopped parsley and extra Parmesan while the steam is still rising
Velvety roasted butternut squash sauce coats strands of fettuccine, with golden squash cubes and garlic on the side. Pin this
Velvety roasted butternut squash sauce coats strands of fettuccine, with golden squash cubes and garlic on the side. | plumoven.com

This pasta turned into what I make when friends need comforting, whether it is a bad breakup or just a rainy Sunday. Something about that sweet, creamy sauce feels like being wrapped in a blanket. Last November I made three batches in one week for different people who just needed a warm meal and someone to listen.

Make It Your Own

I have added sautéed mushrooms to the sauce for earthiness, and toasted walnuts on top bring this incredible crunch that plays off the soft pasta. Fresh spinach stirred in right at the end wilts beautifully and makes the whole thing feel slightly virtuous, though I am not sure adding greens to a cream sauce really counts as healthy.

Perfect Pairings

A crisp white wine like Pinot Grigio cuts through the richness without competing with the squash. On the side, a simple arugula salad dressed with lemon and olive oil brightens the whole plate. I have also served this alongside roasted chicken for non vegetarians, and the combination works surprisingly well.

Storage And Reheating

The sauce actually develops deeper flavor overnight, so do not hesitate to make it a day ahead. Store sauce and pasta separately in the refrigerator for up to 4 days. When reheating, add a splash of water or broth because the sauce thickens in the fridge.

  • Freeze the sauce without cream for up to 3 months, then add fresh cream when reheating
  • The pasta texture suffers in the freezer, so only freeze the sauce portion
  • Reheat gently over low heat, stirring frequently to prevent the cream from separating
Steaming plate of butternut squash pasta, featuring a rich, creamy sauce and a sprinkle of Parmesan for a comforting plant-based meal. Pin this
Steaming plate of butternut squash pasta, featuring a rich, creamy sauce and a sprinkle of Parmesan for a comforting plant-based meal. | plumoven.com

There is something deeply satisfying about turning a humble winter squash into something this elegant and comforting. This recipe has earned its permanent place in my fall rotation, and I hope it finds a home in yours too.

Recipe FAQs

Can I make this dish vegan?

Absolutely. Substitute heavy cream with full-fat coconut milk and use nutritional yeast or vegan Parmesan instead of dairy cheese. The sauce remains creamy and satisfying while being entirely plant-based.

What pasta shapes work best?

Wide noodles like fettuccine, tagliatelle, or pappardelle are ideal as they catch the velvety sauce beautifully. Short shapes like penne or rigatoni also work if you prefer something different.

Can I prepare the sauce ahead?

Yes. Make the sauce up to 2 days in advance and store refrigerated in an airtight container. Reheat gently with a splash of pasta water or broth before tossing with freshly cooked pasta.

How do I prevent the sauce from being too thick?

The roasted squash naturally thickens the sauce. If it becomes too dense, gradually add reserved pasta water or additional vegetable broth until you reach your desired consistency.

What herbs enhance this dish?

Fresh sage is the classic pairing, adding earthy notes that complement squash's sweetness. Thyme, rosemary, or a bay leaf during roasting also work wonderfully. Finish with parsley for brightness.

Can I freeze the sauce?

The sauce freezes well for up to 3 months. Cool completely, transfer to freezer-safe containers, leaving space for expansion. Thaw overnight in the refrigerator before reheating.

Butternut Squash Pasta Creamy Sauce

Comforting pasta with velvety roasted butternut squash sauce, ready in 1 hour.

Prep time
20 min
Time to cook
40 min
Total Duration
60 min
Created by Plum Oven Sophie Warren


Level of challenge Medium

Cuisine type Italian-Inspired

Servings made 4 Portions

Dietary details Meat-Free

Ingredient List

Vegetables

01 1 medium butternut squash (approximately 2 lbs), peeled, seeded, and cut into 1-inch cubes
02 2 cloves garlic, left unpeeled
03 1 small yellow onion, diced
04 1 tablespoon fresh sage leaves, chopped (or 1 teaspoon dried sage)
05 2 tablespoons fresh parsley, chopped for garnish

Pasta

01 12 oz dried fettuccine or tagliatelle (fresh pasta may be substituted)

Dairy & Liquids

01 2 tablespoons olive oil, divided
02 1/2 cup heavy cream (full-fat coconut milk for vegan variation)
03 1/3 cup grated Parmesan cheese (vegan alternative for plant-based version)
04 3/4 cup vegetable broth
05 Salt and freshly ground black pepper to taste
06 Pinch of nutmeg (optional)

How-To Steps

Step 01

Preheat Oven and Prepare Baking Sheet: Preheat oven to 400°F. Line a baking sheet with parchment paper to prevent sticking and facilitate cleanup.

Step 02

Prepare Squash and Garlic for Roasting: Arrange cubed butternut squash and unpeeled garlic cloves on prepared baking sheet. Drizzle with 1 tablespoon olive oil and season with salt and pepper. Toss thoroughly to ensure even coating.

Step 03

Roast Vegetables: Roast squash and garlic for 25–30 minutes, turning halfway through cooking time. Vegetables should be tender and show caramelization at edges when done.

Step 04

Cook Pasta: Bring a large pot of salted water to rolling boil. Cook pasta according to package directions until al dente. Reserve 1/2 cup pasta cooking water before draining.

Step 05

Sauté Aromatics: Heat remaining 1 tablespoon olive oil in large skillet over medium heat. Cook diced onion and sage, stirring occasionally, until onion becomes soft and fragrant, approximately 4 minutes.

Step 06

Prepare Sauce Base: Extract roasted garlic from skins. Place roasted squash, roasted garlic, sautéed onion mixture, vegetable broth, and heavy cream in blender or food processor. Blend until completely smooth and creamy.

Step 07

Finish Sauce: Transfer blended sauce back to skillet over low heat. Stir in Parmesan cheese and nutmeg if using. Season with salt and pepper. Add reserved pasta water if sauce consistency is too thick.

Step 08

Combine Pasta and Sauce: Add cooked pasta to sauce skillet. Gently toss to coat pasta evenly. Cook for 2–3 minutes over low heat until pasta is warmed through.

Step 09

Serve: Plate immediately. Garnish with chopped fresh parsley and additional Parmesan cheese if desired.

Equipment Needed

  • Baking sheet
  • Parchment paper
  • Blender or food processor
  • Large pot
  • Large skillet
  • Chef's knife and cutting board

Allergy Advisories

Review each item for allergens and talk to your healthcare provider if unsure.
  • Contains dairy: heavy cream and Parmesan cheese. Use plant-based alternatives for dairy-free version.
  • Contains gluten: traditional wheat pasta. Substitute with certified gluten-free pasta for gluten-sensitive individuals.
  • Always verify ingredient labels, especially for pre-packaged items, to confirm allergen status.

Nutrition info (per portion)

This nutritional overview is meant for general information. For medical concerns, ask a professional.
  • Caloric Value: 440
  • Fats: 17 g
  • Carbohydrates: 61 g
  • Proteins: 12 g