Creamy Butternut Alfredo

Delicious Butternut Squash Alfredo: Your Ultimate Creamy Fall Pasta Recipe

Butternut Squash Alfredo offers a delightful autumn twist on the classic creamy pasta sauce. It perfectly blends the natural sweetness of butternut squash with rich heavy cream, savory Parmesan cheese, and aromatic garlic, creating a truly comforting and indulgent dish.


Butternut Squash Alfredo in a skillet, showcasing a creamy orange sauce coating pasta

Life has a funny way of evolving, doesn’t it? There was a time when this blog served as my personal sanctuary, a creative escape from the everyday hustle. When asked about my hobbies, baking and blogging were always my enthusiastic answers. It was a joyful outlet, a space where I could share my culinary adventures without pressure.

Now, as fate would have it, this passion project has blossomed into my full-time endeavor. While I absolutely adore spending my days creating new recipes and connecting with fellow food lovers, I’ve found myself in a new predicament: I need new hobbies! The thought of becoming a workaholic, even doing something I love, was a gentle nudge to seek out other joys.

My journey into new pastimes has been…interesting. I’ve ventured into Zumba classes and discovered the simple pleasure of long walks in the park. But can exercise truly be classified as a hobby? “Hi, I’m Carla, and I like to exercise for fun.” It feels a bit, well, uninspired. So, I dug a little deeper, thinking about what genuinely excites me outside the confines of my kitchen, and a clear answer emerged: visiting farmer’s markets.

Yes, I know what you’re thinking – still food-related! I might be failing at the traditional ‘hobby’ concept, but it’s genuinely true. I absolutely revel in scouting out new markets, exploring the vibrant stalls, and gazing at the incredible abundance of fresh, seasonal produce. There’s something magical about the colors, the aromas, and the stories behind each harvest.

And when autumn breezes roll in, my internal compass invariably points me towards the glorious piles of butternut squash. This beautiful winter squash is more than just a vegetable; it’s an invitation to create something truly special, something like this incredible Butternut Squash Alfredo. It’s a dish that perfectly encapsulates the cozy, comforting essence of fall.

This isn’t just any pasta dish; it’s a sophisticated yet surprisingly simple fall twist on a beloved classic. We’re taking the creamy, indulgent base of traditional Alfredo and infusing it with the natural sweetness and vibrant color of roasted butternut squash. Paired with rich heavy cream, sharp Parmesan cheese, and fragrant garlic, it transforms into a sauce that’s both familiar and excitingly new.

The inspiration struck when I considered my Alfredo mac and cheese. I knew I wanted to incorporate butternut squash puree into an Alfredo-style sauce, but I wasn’t craving fettuccine. Instead, my heart was set on penne. Is it strange to have such a specific pasta craving, even though many might argue they all taste the same? For me, the shape matters – penne’s ridged surface is perfect for catching every last drop of this luscious sauce.

Beyond penne, this versatile sauce can elevate other dishes too. Imagine using it to fill my chicken broccoli stuffed shells for an even richer, more autumnal experience. This butternut squash pasta, thoughtfully enhanced with spinach and mushrooms to add bulk and nutrition, is accidentally vegetarian, making it a fantastic option for various dietary preferences. It could even be a star meatless offering for your Thanksgiving dinner for two, providing a comforting and flavorful alternative.

Initially, my recipe involved roasting the butternut squash first, much like I do for my stuffed butternut squash. While roasting brings out a wonderful depth of flavor, I quickly realized it added a considerable amount of time, making it less ideal for a busy weeknight meal. To streamline the process without sacrificing flavor, I switched to cooking the cubed squash directly on the stovetop. This method softens the squash beautifully, making it perfect for pureeing in a blender and significantly cutting down on prep time.

For those evenings when you’re truly pressed for time, this Butternut Squash Alfredo sauce is an excellent make-ahead option. Prepare the sauce in advance, store it in the fridge, and then simply thin it out with a little extra cream or some pasta water when you’re ready to reheat and serve. It’s all about creating delicious, wholesome meals that fit into your lifestyle.

So, move over, traditional fettuccine Alfredo, because there’s a new, vibrant, and utterly delicious Alfredo sauce in town, ready to take center stage on your dinner table!



Ingredients for Butternut Squash Alfredo Sauce laid out on a wooden surface

Key Ingredients for Your Butternut Squash Alfredo

Crafting this incredible butternut squash Alfredo sauce requires a thoughtful selection of ingredients, each playing a crucial role in building its rich flavor and creamy texture. Here’s what you’ll need:

  • Pasta: While classic Alfredo is traditionally paired with fettuccine, I opted for penne in this recipe for its excellent ability to “catch” and hold the thick, savory sauce. Feel free to use any pasta shape that has nooks, ridges, or a tubular form perfect for sauce absorption, such as rigatoni, cavatappi, or even medium shells.
  • Spinach: A fantastic way to sneak in some greens and boost the nutritional value of your meal. Adding frozen spinach directly to the boiling pasta water in its final minutes of cooking is incredibly convenient. If you prefer, fresh spinach can be wilted into the sauce, or you could substitute with other quick-cooking vegetables like frozen peas or chopped kale.
  • Unsalted Butter: The foundational fat for our sauce, providing a rich and luxurious base. Using unsalted butter allows you to control the overall saltiness of the dish more precisely.
  • Mushrooms: Since this is a meatless dish, sliced mushrooms (like white button or cremini) add a wonderful umami depth and a hearty, satisfying texture, making the meal feel more substantial.
  • Onion and Garlic: These aromatics are essential for building a complex flavor profile. Diced yellow or white onion and minced garlic provide a savory counterpoint to the sweetness of the squash, creating a truly delicious base.
  • Butternut Squash: The undisputed star of this fall-inspired Alfredo! Its natural sweetness and vibrant color are what make this dish unique. Ensure it’s cubed into small, uniform pieces for even cooking.
  • Heavy Whipping Cream: Crucial for achieving that signature velvety, thick Alfredo consistency. Do not substitute with lighter creams or milk if you want the authentic richness and proper thickening. As the cream reduces, it naturally thickens the sauce without the need for flour or cornstarch.
  • Freshly Grated Parmesan Cheese: This is non-negotiable for an authentic and flavorful Alfredo. Please use high-quality, freshly grated Parmesan, not the pre-grated variety from a green can, which often contains anti-caking agents and lacks the rich flavor. Freshly grated Parmesan melts smoothly and integrates beautifully into the sauce.
  • Lemon Juice: A small but mighty ingredient! A touch of fresh lemon juice is added at the end to cut through the richness of the creamy sauce, brightening the flavors and preventing it from feeling too heavy.


Cutting a butternut squash in half on a cutting board

Prepping Butternut Squash: Tips for Safe and Easy Cutting

Butternut squash holds a special place in my heart as my favorite winter squash, yet I often hesitate before cooking with it. The main reason? It can be a real challenge to cut in half safely and efficiently. But fear not, there are tricks!

A crucial rule of thumb for any serious home cook is this: if your knife struggles to cut through a winter squash, it’s likely not the right tool for the job. Investing in a good quality, sharp chef’s knife can truly revolutionize your kitchen experience.

Throughout my college years, I relied on inexpensive knives, never fully appreciating their importance until a blogging conference where I won a comprehensive chef knife set. It was a game-changer. Initially, the sheer size of the chef’s knife made me a bit nervous, but its performance quickly dispelled any apprehension. What used to be a wrestling match with a cheap knife – feeling as if it might snap under pressure – became an almost effortless task with the new chef’s knife. It sliced through the butternut squash without a moment’s hesitation.

While I may still struggle to cut a perfectly straight line, the process is now significantly safer and far less strenuous. For best results and safety: stabilize the squash on a cutting board, use a sharp, heavy knife, and keep your fingers tucked away. If you find cutting whole squash too daunting, many grocery stores now offer pre-cut butternut squash, saving you time and effort.


Butternut squash alfredo sauce simmering in a skillet before blending

How To Make Butternut Squash Alfredo: A Step-by-Step Guide

Creating this rich and creamy Alfredo sauce with butternut squash is simpler than you might think. Follow these steps for a perfect meal every time:


Cooking cubed butternut squash in a skillet with a lid on

1. Cook the Butternut Squash: Begin by melting a tablespoon of butter in a large skillet over medium heat. Add your cubed butternut squash along with a pinch of salt. Cover the skillet and allow the squash to cook until it’s fork-tender, which usually takes about 10-12 minutes. This steaming method helps the squash soften beautifully. Once tender, remove the lid, stir in the minced garlic, and cook for another minute until fragrant. Transfer the cooked squash and garlic to a heat-safe bowl, leaving the skillet ready for the next step.


Adding Parmesan cheese and heavy cream to butternut squash in a skillet

2. Create the Creamy Base: In the same skillet, slowly whisk in the heavy cream (ensure it’s at room temperature to prevent curdling) followed by the freshly grated Parmesan cheese. Bring this mixture to a gentle boil, stirring constantly. The sauce will begin to thicken as the cream reduces and the cheese melts seamlessly into it, forming a luxurious base for your Alfredo.


Blended butternut squash alfredo sauce in a skillet, smooth and creamy

3. Blend Until Smooth: Carefully transfer the cream and cheese mixture along with the cooked butternut squash and garlic to a regular blender, or use an immersion blender directly in the skillet. Puree until the sauce is completely smooth and velvety. If the sauce appears too thick, you can thin it out to your desired consistency by adding a little more heavy cream or some reserved pasta water, a trick that also helps the sauce cling to the pasta better.

4. Combine and Serve: Pour the beautifully blended sauce back into the skillet. Stir in the fresh lemon juice, which will brighten the flavors and balance the richness. Then, add your cooked pasta, along with the wilted spinach and sautéed mushrooms. Toss everything together until the pasta is thoroughly coated in the vibrant, creamy butternut squash Alfredo. Serve immediately and enjoy the comforting flavors of fall!


Butternut Squash Alfredo Pasta mixed in a skillet, ready to serve

What To Serve With Butternut Squash Alfredo

Since your butternut squash Alfredo pasta is undeniably rich and satisfying, pairing it with complementary sides that offer contrast in flavor and texture is key to a perfectly balanced meal. Here are some ideas:

  • Light Green Salad: A fresh, crisp green onion salad or a simple mixed greens salad with a tangy vinaigrette is an excellent choice. The acidity of the dressing and the crunch of fresh vegetables provide a refreshing counterpoint to the creamy pasta.
  • Crusty Bread or Dinner Rolls: What’s pasta without something to sop up every last bit of that amazing sauce? Serve with warm, crusty bread or my delicious small batch dinner rolls. A garlic bread would also be a fantastic addition.
  • Roasted Vegetables: For even more vegetable goodness, consider serving a side of roasted Brussels sprouts, asparagus, or green beans. Their slight char and tender-crisp texture will add another layer of flavor and interest.
  • Light Protein (Optional): While this dish is hearty enough on its own, if you’re looking to add a lean protein, grilled or pan-seared chicken breast or shrimp would be a wonderful addition, keeping the meal relatively light and healthy.
  • Wine Pairing: A crisp white wine like a Chardonnay (unoaked or lightly oaked), Pinot Grigio, or even a dry Rosé would complement the richness of the Alfredo sauce beautifully.

Butternut Squash Alfredo FAQ

Can you substitute heavy cream in Alfredo sauce?

For the absolute best results and the creamiest, richest sauce, it’s highly recommended not to substitute heavy cream. The high fat content of heavy cream is essential for thickening the sauce as it reduces, giving it that classic luscious texture. While you can use whole milk, the sauce will be noticeably thinner and less rich in flavor and consistency.

Can you substitute the butternut squash?

Absolutely! If butternut squash isn’t available or you’re looking for an alternative, canned pumpkin puree (ensure it’s 100% pumpkin, not pie filling) makes an excellent substitute. It offers a similar earthy sweetness and creamy texture, much like I used in my popular pumpkin mac and cheese.

Can I make the Alfredo sauce in advance?

Yes, you can certainly prepare the butternut squash Alfredo sauce up to 2 days ahead of time. Store it in an airtight container in the refrigerator. When reheating, the sauce may have thickened considerably, so thin it out with a little more heavy cream or a splash of pasta water until it reaches your desired consistency. Gently reheat on the stovetop over low heat, stirring frequently.

Can this recipe be made vegan or dairy-free?

To make this recipe vegan or dairy-free, you would need to replace the heavy cream with full-fat canned coconut milk (for richness, though it will impart a slight coconut flavor) or a high-quality, unsweetened cashew cream. The Parmesan cheese can be substituted with nutritional yeast for a cheesy flavor, or a good quality plant-based Parmesan alternative. Use vegan butter instead of dairy butter. The overall flavor profile will change slightly, but it can still be a delicious plant-based meal.

How do I store leftovers?

Leftovers of Butternut Squash Alfredo can be stored in an airtight container in the refrigerator for up to 3-5 days. When reheating, you may need to add a splash of milk, cream, or water to loosen the sauce, as it tends to thicken in the fridge.

More Delicious Pasta Recipes to Explore

If you’ve thoroughly enjoyed this creamy butternut squash Alfredo sauce recipe, then you’ll love diving into these other comforting and flavorful pasta dishes from my kitchen:

  • Buffalo Chicken Mac and Cheese: A spicy and cheesy twist on a classic.
  • Chicken Pot Pie Pasta: All the flavors of your favorite pie in a convenient pasta form.
  • Mushroom Tomato Pasta: A simple yet incredibly satisfying creamy tomato and mushroom dish.
  • Haluski: A comforting Eastern European classic with noodles and cabbage.
  • Skillet Lasagna: All the layers and flavors of lasagna, made easily in one skillet.
Butternut Squash Alfredo in a skillet, served with fresh herbs

Butternut Squash Alfredo

Yield:
4 servings
Prep Time:
30 minutes
Cook Time:
30 minutes
Total Time:
1 hour

Butternut Squash Alfredo is a fall twist on a classic creamy pasta sauce that combines the natural sweetness of butternut squash with heavy cream, Parmesan cheese, and garlic.

Ingredients

  • 8 ounces uncooked penne pasta
  • 6 ounces frozen spinach
  • 2 tablespoons unsalted butter
  • 4 white button mushrooms, sliced
  • 1/4 cup diced yellow or white onion
  • 1 + 1/2 cup cubed butternut squash
  • 1 clove garlic, minced
  • 1 cup heavy whipping cream, room temperature (do not substitute)
  • 3/4 cup freshly grated Parmesan cheese (not from a green can)
  • 1 tablespoon lemon juice

Instructions

  1. Bring a large pot of water to a boil. Once boiling, add a big handful of salt then add the pasta. Cook as directed on the package until al dente, about 10-12 minutes. Once done, add
    the spinach to the boiling water and cook another minute. Drain into a colander.
  2. While the pasta is cooking, in a large skillet over medium heat, melt 1 tablespoon butter. Add onion, mushrooms, and a pinch of salt. Cook until softened, about 5 minutes. Transfer to a bowl.
  3. In the same skillet (no need to clean), melt the remaining 1 tablespoon butter. Add the butternut squash and a pinch of salt. Cover and cook until softened, about 10-12 minutes. Remove the lid and add the garlic. Cook for 1 minute.
  4. Slowly whisk in the cream then the cheese. Bring to a boil.
  5. Remove from the heat then transfer to a blender (or use an immersion blender). Puree until smooth. If it’s too thick, add more cream or some pasta water to thin it.
  6. Pour the sauce back into the skillet then add lemon juice. Stir in the pasta and mushroom mixture.

    Refrigerate leftovers in an airtight container for up to 5 days.

Notes

  • Serve with Small Batch Dinner Rolls and Green Onion Salad for a full meal.
  • Enjoyed this recipe? Check out my Alfredo Mac and Cheese and Chicken Broccoli Stuffed Shells.

Recommended Products

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  • 12 Inch Large Skillet

Did you make this recipe?

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© Carla Cardello


Cuisine:

American

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Category: Main Dishes

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First published October 2, 2014