If you’re craving a comforting, creamy dish that stays true to clean eating, this Paleo Chicken Alfredo with Spaghetti Squash {Whole30} Recipe is an absolute game-changer. It swaps traditional pasta for tender, naturally gluten-free spaghetti squash and replaces heavy cream with a luscious cashew Alfredo sauce that’s rich, velvety, and impossibly satisfying. With juicy chicken thighs seasoned perfectly and a sauce that comes together in minutes, this recipe offers a wholesome meal that feels indulgent without any guilt. You’re about to discover one of those recipes you’ll want to make again and again.

Ingredients You’ll Need

The image shows three white dishes on a white marbled surface with a white and gray checkered cloth partially underneath. In the foreground, a white bowl is filled with yellow spaghetti squash strands, finely textured and loosely piled. To the right and slightly above is a white plate with evenly sliced cooked chicken pieces that have a browned exterior and tender inside. On the left side, there is a clear glass container with a creamy white sauce inside and a spoon resting in it. A woman's hand is holding the container. Bright green basil leaves are partly visible in the lower right corner. Photo taken with an iphone --ar 4:5 --v 7

The beauty of this dish lies in its simplicity and the way each ingredient shines. From the velvety cashew sauce to the roasted spaghetti squash and savory chicken, every component adds a layer of flavor, texture, and color to make this dish truly special.

Cashews (1 1/2 cups): No soaking necessary, these create the creamy base of the Alfredo sauce with natural richness.

Almond milk (1 cup): Keeps the sauce dairy-free while adding smoothness and lightness.
Garlic (3 cloves): Infuses the sauce with unmistakable warmth and depth.
Lemon juice (3 Tbsp): Adds a bright zing to balance the creaminess perfectly.

Nutritional yeast (3 Tbsp): Brings a cheesy flavor without any dairy.
Fine sea salt (1 1/4 tsp): Enhances all the flavors just right.
Dried basil (1 tsp, optional): Adds subtle herbaceous notes to the sauce.

Spaghetti squash (1 med/large): The wonderfully stringy, low-carb pasta alternative.
Avocado oil or spray: Perfect for roasting the squash and cooking the chicken, with a neutral flavor that won’t overpower.
Sea salt and black pepper: Essential seasoning for both squash and chicken.

Boneless, skinless chicken thighs or breasts (1 1/2 lbs): Choose thighs for juicier meat; breasts if you prefer leaner protein.
Dried oregano (1/2 tsp) and dried basil (1/2 tsp): Give the chicken a fragrant herbal lift.
Avocado oil or ghee (1 Tbsp): For perfectly searing the chicken to golden perfection.

Fresh basil or parsley: Vibrant garnishes to add freshness and a pop of color.

How to Make Paleo Chicken Alfredo with Spaghetti Squash {Whole30} Recipe

Step 1: Prepare the Cashew Alfredo Sauce

This sauce is the heart of the dish, combining simple ingredients into something magical. Toss all the cashew sauce ingredients — cashews, almond milk, garlic, lemon juice, nutritional yeast, salt, and optional dried basil — into a high-speed blender. Blend until the mixture is completely smooth and creamy. The sauce should warm slightly due to the blending friction; if it’s still cool, just give it a gentle heat on the stove to bring it to serving temperature. This sauce proves that dairy-free can be decadently delicious.

Step 2: Roast the Spaghetti Squash

Roasting the spaghetti squash is what transforms it from a solid, oblong vegetable to delicate, pasta-like strands. Slice the squash in half lengthwise, scoop out the seeds, then either spray or brush the cut sides with avocado oil. Sprinkle with salt and pepper to bring out its natural flavors. Place the halves cut-side down on a parchment-lined baking sheet and roast at 400°F for about 22 to 25 minutes. Keep it slightly firm for that perfect al dente bite, or roast longer if you prefer softness. You’ll be amazed at how easily the strands separate with a fork once it’s done.

Step 3: Cook the Chicken

While the squash roasts, turn your attention to the chicken. Season your thighs or breasts generously with salt, pepper, dried oregano, and dried basil for that herbal punch. Heat avocado oil or ghee in a skillet over medium-high heat and cook the chicken for 5 to 6 minutes per side. Don’t rush this part—lower the heat as needed to prevent burning so you get a beautiful golden crust while keeping the inside juicy and tender. After cooking, let the chicken rest briefly, then slice it into bite-sized pieces or strips.

Step 4: Assemble Your Paleo Chicken Alfredo with Spaghetti Squash {Whole30} Recipe

Use a fork to gently scrape the roasted spaghetti squash strands out of their shells and into a serving bowl. Pour over the creamy cashew Alfredo sauce, then pile on the tender chicken slices. Finally, garnish with fresh basil or parsley to add a burst of color and freshness. This dish invites you to dive right in—it’s a comforting, silky plate that satisfies and nourishes in equal measure.

How to Serve Paleo Chicken Alfredo with Spaghetti Squash {Whole30} Recipe

The image shows a white bowl filled with tender cooked chicken pieces that have a light brown, slightly crispy skin layer. The chicken sits on a layer of creamy white sauce that looks smooth and thick. Chopped fresh green herbs are scattered over the chicken, adding a bright, fresh contrast. A silver spoon is partly inside the bowl, resting on the edge. The bowl is placed on a white marbled surface with a soft focus background. photo taken with an iphone --ar 4:5 --v 7

Garnishes

A sprinkle of fresh herbs like basil or parsley not only adds a lovely visual contrast but also brings an aromatic lift to every bite. A dash of freshly cracked black pepper or a pinch of red chili flakes can add a subtle kick if you like it spicy. For a finishing touch, a little lemon zest can brighten the entire dish.

Side Dishes

This recipe stands beautifully on its own, but if you want to round out your meal, consider a simple green salad with a lemon vinaigrette or roasted seasonal vegetables. Steamed broccoli or sautéed greens also complement the creamy sauce and add a nutritious crunch to the plate.

Creative Ways to Present

For a fun twist, serve the Alfredo and chicken directly inside the roasted spaghetti squash shells—like edible bowls. It’s a charming presentation that impresses guests and keeps it rustic. Alternatively, layer the spaghetti squash and chicken in shallow bowls and drizzle the sauce over each serving for a classy dinner party vibe.

Make Ahead and Storage

Storing Leftovers

Store any leftovers in an airtight container in the refrigerator for up to 3 days. Keep the sauce and chicken separate from the spaghetti squash if possible to maintain the best texture, then reassemble when ready to eat.

Freezing

This dish can be frozen, but it’s best to freeze the components separately to preserve texture and flavor. Freeze the cooked chicken and Alfredo sauce in freezer-safe containers or bags for up to 2 months. The spaghetti squash can be frozen but might become a bit softer when thawed, so use it within a month. Thaw overnight in the refrigerator before reheating.

Reheating

Reheat gently on the stovetop or in the microwave. If reheating the sauce, stir frequently to keep it from separating. Add a splash of almond milk if it thickens too much. Reheat the spaghetti squash with a light drizzle of oil or butter to restore moisture and warmth.

FAQs

Is this Paleo Chicken Alfredo with Spaghetti Squash {Whole30} Recipe dairy-free?

Absolutely! The creamy Alfredo sauce uses cashews and almond milk instead of dairy, making it perfect for Paleo and Whole30 diets.

Can I use other types of squash instead of spaghetti squash?

Spaghetti squash is unique for its stringy texture that mimics pasta, so while other squashes can be used, they won’t provide the same “noodly” experience.

What can I substitute if I don’t have nutritional yeast?

Nutritional yeast adds a cheesy flavor, but if you don’t have it, you can omit it or add a small amount of miso paste or vegan cheese alternatives, though these aren’t Whole30 compliant.

How do I know when the chicken is cooked through?

The internal temperature should reach 165°F (75°C). The chicken should be firm but juicy when pressed and no longer pink inside.

Can I make this recipe vegan?

Yes, simply omit the chicken and add sautéed mushrooms, cauliflower, or your favorite veggies to keep it hearty and delicious.

Final Thoughts

This Paleo Chicken Alfredo with Spaghetti Squash {Whole30} Recipe is one of those rare dishes that feels indulgent and nourishing all at once. Whether you’re new to clean eating or just looking for a new favorite weeknight dinner, it’s easy to make, packed with flavor, and satisfying from the first bite to the last. Trust me, you’ll fall in love with its creamy, comforting goodness—so get your ingredients ready and dive in!

Paleo Chicken Alfredo with Spaghetti Squash {Whole30} Recipe

Ingredients You’ll Need