Spaghetti Squash Alfredo

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If you love the comfort of creamy Alfredo but want a lighter, low-carb twist, Spaghetti Squash Alfredo is your dream dinner. Roasted spaghetti squash replaces traditional pasta, offering a tender yet slightly crisp texture that holds onto every drop of garlicky, cheesy sauce. It’s rich, cozy, and surprisingly easy to make—perfect for weeknights and dinner parties alike.

This recipe transforms humble squash into a crave-worthy dish that feels indulgent without being heavy. The cheesy topping gets broiled to golden perfection, creating a bubbling crust that adds a satisfying bite. Whether you’re keto, gluten-free, or simply want to sneak in more veggies, this is one recipe that checks all the boxes.

What Kind of Alfredo Sauce Works Best?

A classic homemade Alfredo sauce made with butter, garlic, cream, and parmesan works beautifully here. If you’re short on time, a high-quality store-bought version can step in—just make sure it’s thick and flavorful. Feel free to add a pinch of nutmeg or a handful of spinach for a little extra dimension.

Ingredients for the Spaghetti Squash Alfredo

• Spaghetti Squash: This golden-fleshed vegetable becomes tender and noodle-like when roasted, creating the base for our dish.
• Olive Oil: Helps caramelize the edges of the squash during roasting.
• Salt and Pepper: Basic but essential for enhancing the squash and sauce.
• Butter: Adds richness and forms the base of the Alfredo sauce.
• Garlic: Infuses the sauce with deep, aromatic flavor.
• Heavy Cream: Provides the creamy body of the Alfredo sauce.
• Parmesan Cheese: Melts into the sauce for a classic cheesy flavor.
• Mozzarella Cheese: Sprinkled on top before broiling to create a bubbly, browned topping.
• Parsley: For a fresh, herby finish.

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How To Make the Spaghetti Squash Alfredo

Step 1: Roast the Spaghetti Squash

Preheat your oven to 400°F. Cut the squash in half lengthwise and scoop out the seeds. Drizzle with olive oil, season with salt and pepper, and place cut side down on a baking sheet. Roast for 35-40 minutes until tender. Let cool slightly, then use a fork to scrape into spaghetti-like strands.

Step 2: Make the Alfredo Sauce

In a skillet over medium heat, melt the butter and sauté the garlic until fragrant (about 1 minute). Pour in the heavy cream and bring to a simmer. Stir in the parmesan cheese until melted and smooth. Season with salt and pepper to taste.

Step 3: Combine and Fill

Add the spaghetti squash strands into the skillet and toss until fully coated in the Alfredo sauce. Transfer the mixture back into the squash shells (or a baking dish).

Step 4: Top and Broil

Sprinkle the mozzarella cheese generously on top and broil for 2-4 minutes until golden and bubbly. Watch closely so it doesn’t burn.

Step 5: Garnish and Serve

Finish with chopped parsley and serve hot.

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How to Serve and Store Spaghetti Squash Alfredo

Serve this dish piping hot straight from the shell or in shallow bowls for a rustic presentation. It’s incredibly satisfying on its own but also pairs well with a crisp salad or grilled protein. To store leftovers, place them in an airtight container in the refrigerator for up to 3 days. Reheat in the microwave or oven, adding a splash of cream if needed to restore creaminess.

What to Serve With Spaghetti Squash Alfredo?

Garlic Parmesan Roasted Broccoli

The earthy flavor and crisp edges of roasted broccoli balance the richness of Alfredo perfectly.

Balsamic Glazed Chicken

Adds protein and a tangy contrast that lifts the creamy notes.

Tomato Basil Salad

Bright and refreshing, it cuts through the heaviness with juicy sweetness.

Crispy Prosciutto Chips

For an elegant crunch, serve a few pieces of crisped prosciutto on the side or crumbled on top.

Cauliflower Fritters

Mild and toasty, these complement the Alfredo sauce without competing.

Roasted Garlic Mushrooms

Their umami depth enhances the cheesy, garlicky foundation of the dish.

Air-Fried Zucchini Fries

A light and crispy companion that keeps the meal veggie-forward.

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Want More Low-Carb Dinner Ideas?

If you’re loving this Spaghetti Squash Alfredo, you might also enjoy these delicious options:

• Cheesy Spinach Stuffed Shells – great for meal prep and freezer-friendly.
• Chicken Cordon Bleu Casserole – ultra creamy and packed with flavor.
• Creamy Ground Beef Alfredo Pasta – hearty, rich and comforting.
• Creamy Beef and Shells Recipe – a nostalgic favorite with a creamy twist.
• Garlic Butter Chicken with Rigatoni and Parmesan – if you’re craving a more filling pasta.

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