Butternut Squash Pasta Sauce Recipe
If you’re on the lookout for a comforting, vibrant, and downright delicious sauce that elevates your pasta game, this Butternut Squash Pasta Sauce Recipe is exactly what you need. Creamy, subtly sweet butternut squash mingles with roasted tomatoes and onions to create a luscious sauce that’s both cozy and fresh. It’s the kind of recipe that fills your kitchen with inviting aromas and brings a silky, golden glow to your plate. Perfect for weeknights or when you want a flavorful yet simple meal, this sauce strikes the perfect balance between wholesome ingredients and soul-satisfying taste.

Ingredients You’ll Need
Every ingredient in this Butternut Squash Pasta Sauce Recipe plays a special role—each one simple yet essential. Together, they create a blend of flavors and textures that make this sauce irresistibly smooth, perfectly seasoned, and beautifully colorful.
- 16 oz bag of frozen diced butternut squash: The star ingredient, offering natural sweetness and a creamy texture once roasted.
 - 1.5 cups fresh chopped tomatoes: Adds brightness and acidity that balance the richness of the squash.
 - 1/2 yellow onion: Provides subtle sweetness and depth when baked alongside the other veggies.
 - 2 tbsp olive oil: Helps roast the vegetables to caramelized perfection and adds a silky mouthfeel.
 - 1 tsp salt: Enhances all the flavors and brings out the natural sweetness of the squash and tomatoes.
 - 1/4 tsp black pepper: Adds a gentle spicy kick to round out the seasoning.
 - 1/2 tsp dried thyme: Infuses an earthy, herbal note that complements the autumnal character of the squash.
 - 1 lb pasta: Your canvas for the sauce, any shape you love works beautifully here.
 - 1/3 cup pasta water reserved from cooked pasta: A secret ingredient that helps blend the sauce to a smooth and silky consistency.
 
How to Make Butternut Squash Pasta Sauce Recipe
Step 1: Preheat and Prepare the Vegetables
Start by preheating your oven to 450°F and lining a baking sheet with parchment paper. This high heat ensures your butternut squash, tomatoes, and onion will caramelize nicely, bringing out their natural sweetness and creating that deep, roasted flavor base for your sauce.
Step 2: Roast the Vegetables
Place the frozen butternut squash cubes, chopped tomatoes, and sliced onion on the baking sheet. Drizzle with olive oil, then sprinkle with salt, black pepper, and dried thyme. Give it a good toss right on the tray, so everything is evenly coated with oil and seasonings. Roast at 450°F for 20 minutes—this step is crucial for locking in flavor.
Step 3: Cook the Pasta
While the veggies are roasting, bring a pot of salted water to a boil and cook the pasta according to package instructions. Just before draining, scoop out 1/3 cup of the starchy pasta water, which will help transform your roasted veggies into a silky sauce.
Step 4: Blend the Sauce
Working quickly while the veggies are still hot, transfer them into a blender along with the reserved pasta water. Blend until the mixture is completely smooth and creamy. This sauce should have a beautiful golden hue and velvety texture that coats your pasta perfectly.
Step 5: Toss and Serve
Drain your pasta and pour the luscious butternut squash sauce over it. Toss everything together gently so each strand or piece is enveloped with that rich, flavorful sauce. Serve immediately for the best experience, adding your favorite parmesan or plant-based cheese if you like.
How to Serve Butternut Squash Pasta Sauce Recipe

Garnishes
Adding the right garnishes can turn a simple pasta into a showstopper. Try a sprinkle of freshly grated Parmesan or vegan parmesan, a touch of crushed red pepper flakes for heat, or some fresh basil or sage leaves for a fragrant finish. Toasted pine nuts or walnuts add a delightful crunch and nutty undertone.
Side Dishes
This Butternut Squash Pasta Sauce Recipe pairs beautifully with crisp green salads dressed lightly with lemon and olive oil, or roasted vegetables like Brussels sprouts or asparagus. A crusty garlic bread or a warm baguette offers the perfect vehicle to scoop up any leftover sauce on your plate.
Creative Ways to Present
For a fun twist, try layering the pasta with sauce in individual casserole dishes, topping with breadcrumbs and baking until golden and bubbly. Or use the sauce as a base for a veggie-packed lasagna without the heavy tomato sauce. It’s also delicious drizzled over roasted chicken or seared tofu for a heartier meal.
Make Ahead and Storage
Storing Leftovers
If you have leftovers, transfer your butternut squash sauce and pasta into airtight containers and refrigerate. The sauce will keep well for 3 to 4 days, retaining its vibrant flavor and creamy consistency, making it perfect for quick lunches or dinners during the week.
Freezing
This Butternut Squash Pasta Sauce Recipe freezes beautifully on its own—just keep the sauce separate from any pasta. Pour it into freezer-safe containers or bags, leaving room for expansion, and it will last for up to 3 months. Thaw overnight in the fridge before reheating.
Reheating
When you’re ready to enjoy leftovers, reheat the sauce gently on the stove over low heat, stirring frequently. You can add a splash of water or broth if it thickens too much. Toss it back with freshly cooked pasta for a warm, comforting meal that tastes just as good as the first time.
FAQs
Can I use fresh butternut squash instead of frozen?
Absolutely! Just peel, seed, and dice fresh butternut squash. Roast it for about 25 to 30 minutes at 450°F until tender. The fresh squash will offer a slightly different texture but will be just as delicious in this recipe.
Is this sauce vegan friendly?
Yes, this Butternut Squash Pasta Sauce Recipe is naturally vegan if you skip the Parmesan or use a plant-based alternative. It’s a great option for those looking for a creamy pasta sauce without dairy.
What pasta shapes work best with this sauce?
Since the sauce is smooth and silky, it pairs well with both long pastas like spaghetti or fettuccine and short shapes like penne or rigatoni. The sauce clings nicely to textured pasta too, like rigatoni ridged or fusilli.
Can I add other herbs or spices?
Definitely! While thyme brings earthy notes, feel free to experiment with rosemary, sage, or even a pinch of nutmeg to enhance the warmth of the butternut squash. Just be careful not to overpower the natural sweetness of the veggies.
How creamy is the sauce? Do I need to add cream?
This sauce is naturally creamy thanks to the pureed roasted butternut squash and the starchy pasta water. There’s no need for added cream, making it lighter but still luxuriously smooth.
Final Thoughts
Trust me, once you try this Butternut Squash Pasta Sauce Recipe, it will quickly earn a permanent spot in your rotation. It’s the perfect blend of cozy and bright, easy but impressive, and a creative way to enjoy the sweetness of autumn squash any time of the year. Give it a go and get ready for a new pasta night favorite that feels like a warm hug on a plate!
PrintButternut Squash Pasta Sauce Recipe
A creamy and flavorful butternut squash pasta sauce made by roasting butternut squash, tomatoes, and onions, then blending them into a smooth sauce. This comforting sauce is tossed with cooked pasta for a quick, vibrant, and wholesome meal perfect for weeknights.
- Prep Time: 10 minutes
 - Cook Time: 30 minutes
 - Total Time: 40 minutes
 - Yield: 6 servings 1x
 - Category: Main Course
 - Method: Baking
 - Cuisine: Italian
 - Diet: Vegetarian
 
Ingredients
Vegetables
- 16 oz bag of frozen diced butternut squash
 - 1.5 cups fresh chopped tomatoes
 - 1/2 yellow onion, sliced
 
Seasonings & Oil
- 2 tbsp olive oil
 - 1 tsp salt
 - 1/4 tsp black pepper
 - 1/2 tsp dried thyme
 
Pasta
- 1 lb pasta (such as penne, fusilli, or spaghetti)
 - 1/3 cup reserved pasta water (from cooked pasta)
 
Instructions
- Preheat the Oven: Start by preheating your oven to 450 degrees Fahrenheit and line a baking sheet with parchment paper for easy cleanup.
 - Prepare Vegetables: Spread the frozen diced butternut squash, chopped tomatoes, and sliced yellow onion evenly on the prepared baking sheet.
 - Season Vegetables: Drizzle 2 tablespoons olive oil over the veggies, then sprinkle with 1 teaspoon salt, 1/4 teaspoon black pepper, and 1/2 teaspoon dried thyme. Toss gently to coat all the vegetables evenly.
 - Roast Vegetables: Place the baking sheet in the preheated oven and roast the vegetables at 450°F for 20 minutes, allowing them to soften and caramelize slightly for enhanced flavor.
 - Cook Pasta: While the veggies roast, bring a large pot of salted water to a boil and cook 1 pound of pasta according to the package instructions until al dente.
 - Reserve Pasta Water: Before draining the pasta, reserve 1/3 cup of the starchy pasta cooking water and transfer it to a blender.
 - Blend Sauce: Immediately add the hot roasted vegetables to the blender with the reserved pasta water and blend until smooth and creamy, creating a luscious butternut squash pasta sauce.
 - Toss Pasta with Sauce: Pour the blended sauce over the cooked pasta in a large bowl or pot, tossing thoroughly to ensure every strand or piece is coated evenly.
 - Serve: Divide the sauced pasta onto plates and serve immediately. Garnish with freshly grated Parmesan cheese or a plant-based alternative if desired for extra flavor.
 
Notes
- Use fresh tomatoes when they are in season for a brighter sauce flavor.
 - Reserve pasta water carefully; it helps loosen the sauce and improves its texture.
 - For a vegan option, omit Parmesan or substitute with nutritional yeast or vegan cheese.
 - This sauce can be made ahead and reheated on the stovetop with a splash of pasta water to loosen.
 - You can swap dried thyme with fresh thyme if available, adjusting quantities accordingly.
 
Keywords: butternut squash pasta sauce, roasted vegetable pasta sauce, vegetarian pasta sauce, easy pasta sauce, fall pasta recipe
