Chicken Spinach Spaghetti Squash

Golden roasted spaghetti squash strands glisten as they mingle with creamy Parmesan sauce, tender diced chicken, and vibrant wilted spinach in this Chicken and Spinach Spaghetti Squash Alfredo.  Save
Golden roasted spaghetti squash strands glisten as they mingle with creamy Parmesan sauce, tender diced chicken, and vibrant wilted spinach in this Chicken and Spinach Spaghetti Squash Alfredo. | cookedcomfort.com

This hearty dish combines roasted spaghetti squash strands with succulent diced chicken and nutrient-rich baby spinach, all enveloped in a velvety homemade Parmesan cream sauce. The natural sweetness of the roasted squash perfectly balances the savory garlic and nutmeg notes, while fresh spinach adds vibrant color and earthy flavor. Each forkful delivers satisfying comfort without the heavy carbohydrates of traditional pasta.

The first time I attempted spaghetti squash, I stood in my kitchen staring at the roasted halves, genuinely surprised when a fork revealed perfect pasta-like strands. Something about that vegetable magic clicked. This creamy Alfredo version came together on a Tuesday when I was craving comfort food but wanted to skip the heavy pasta coma.

My sister-in-law reluctantly tried this during a family dinner, announcing she didnt do diet food. She went back for seconds and asked for the recipe before leaving. Now its her go-to when shes watching her carbs but still wants something that feels indulgent.

Ingredients

  • 1 large spaghetti squash: Pick one thats heavy for its size with a hard, unblemished rind
  • 2 tbsp olive oil: Divided use helps roast the squash and sear the chicken properly
  • 2 boneless chicken breasts: Dicing them before cooking ensures even, quick cooking
  • 4 cloves garlic: Freshly minced makes a huge difference in the Alfredo sauce
  • 1 cup heavy cream: Full fat creates that luxurious restaurant style texture
  • 1 cup freshly grated Parmesan: Pre grated cheese wont melt as smoothly into the sauce
  • 4 cups baby spinach: It wilts down dramatically so dont be afraid of the volume

Instructions

Roast the squash:
Cut the squash in half lengthwise, scoop out seeds, and roast at 400°F for 35 to 40 minutes until tender
Cook the chicken:
Sauté seasoned diced chicken in olive oil until golden and cooked through, about 7 minutes
Build the sauce:
Melt butter, cook garlic for one minute, then add cream and simmer before whisking in Parmesan and nutmeg
Combine everything:
Scrape squash into strands, toss with the sauce, spinach, and chicken until heated through
A close-up photo shows the low-carb Chicken and Spinach Spaghetti Squash Alfredo served in a rustic white bowl with fresh parsley garnish.  Save
A close-up photo shows the low-carb Chicken and Spinach Spaghetti Squash Alfredo served in a rustic white bowl with fresh parsley garnish. | cookedcomfort.com

This dish has become my answer to friends who say they want to eat lighter but hate salads. Watching someone take that first bite and realize theyre not missing anything is one of my favorite kitchen moments.

Making It Ahead

Ive roasted the squash up to three days in advance and stored the strands in the fridge. The sauce comes together quickly, so this makes weeknight dinners feel special without the last minute rush.

Perfecting the Sauce

Low and slow is the secret to a smooth Alfredo. If the heat is too high, the cream can separate. Keep it at a gentle simmer and whisk constantly as you add the cheese.

Serving Suggestions

A crisp green salad with lemon vinaigrette cuts through the richness beautifully. I also like serving this with extra Parmesan at the table.

  • Warm some crusty gluten free bread for soaking up any extra sauce
  • A glass of Pinot Grigio balances the creaminess perfectly
  • Sprinkle red pepper flakes if you want a little heat
Steam rises from a forkful of Chicken and Spinach Spaghetti Squash Alfredo featuring savory chicken pieces, bright green spinach, and rich garlicky sauce. Save
Steam rises from a forkful of Chicken and Spinach Spaghetti Squash Alfredo featuring savory chicken pieces, bright green spinach, and rich garlicky sauce. | cookedcomfort.com

Theres something deeply satisfying about serving a dish that feels decadent but leaves everyone feeling light and happy. Hope this becomes a regular in your rotation too.

Recipe FAQs

Yes, you can roast the spaghetti squash and cook the chicken up to 2 days in advance. Store them separately in airtight containers in the refrigerator. Reheat gently before combining with the freshly made sauce for best texture and flavor.

For a lighter version, try half-and-half or coconut cream for dairy-free options. Keep in mind that the sauce won't be quite as thick or rich. You can also use evaporated milk, though it will slightly alter the flavor profile.

The squash is ready when the edges are golden brown and the flesh yields easily to a fork. You should be able to scrape the strands away from the skin with minimal resistance. Overcooking may make the strands mushy, so check at the 35-minute mark.

While possible, freezing may affect the cream sauce's texture, potentially causing separation. If freezing, store in an airtight container for up to 2 months. Thaw overnight in the refrigerator and reheat gently on the stovetop, adding a splash of cream if needed.

Keep the heat at medium or lower when adding the cream and cheese. Avoid boiling once the dairy is added. Gradually whisk in the Parmesan and remove from heat immediately once smooth and combined. The residual heat will complete the melting process.

Beyond spinach, try sautéed mushrooms, roasted red peppers, sun-dried tomatoes, or broccoli florets. For a seasonal twist, asparagus or zucchini pair beautifully with the creamy Alfredo flavors. Add vegetables during step 5 to wilt them properly.

Chicken Spinach Spaghetti Squash

Creamy low-carb Alfredo with tender chicken, fresh spinach, and roasted spaghetti squash in rich Parmesan sauce.

Prep 20m
Cook 40m
Total 60m
Servings 4
Difficulty Medium

Ingredients

For the Spaghetti Squash

  • 1 large spaghetti squash (about 3 lbs)
  • 2 tsp olive oil
  • 1/2 tsp salt
  • 1/4 tsp black pepper

For the Chicken

  • 2 boneless, skinless chicken breasts (about 1 lb), diced
  • 1 tbsp olive oil
  • 1/2 tsp salt
  • 1/4 tsp black pepper
  • 1/2 tsp Italian seasoning

For the Alfredo Sauce

  • 2 tbsp unsalted butter
  • 4 cloves garlic, minced
  • 1 cup heavy cream
  • 1 cup freshly grated Parmesan cheese
  • 1/4 tsp ground nutmeg
  • Salt and pepper to taste

Vegetables and Add-ins

  • 4 cups fresh baby spinach
  • 1/4 cup chopped fresh parsley (optional)
  • 1/4 cup grated Parmesan (for garnish)

Instructions

1
Preheat and Prepare Oven: Preheat oven to 400°F. Line a baking sheet with parchment paper.
2
Roast the Spaghetti Squash: Slice the spaghetti squash in half lengthwise. Scoop out the seeds and pulp. Drizzle the cut sides with olive oil, and season with salt and pepper. Place cut-side down on the baking sheet and roast for 35–40 minutes, until tender.
3
Cook the Chicken: While the squash roasts, heat 1 tbsp olive oil in a large skillet over medium-high heat. Add diced chicken, season with salt, pepper, and Italian seasoning. Sauté for 6–8 minutes until cooked through and lightly golden. Remove from skillet and set aside.
4
Prepare the Alfredo Sauce: In the same skillet, melt butter over medium heat. Add minced garlic and cook for 1 minute until fragrant. Pour in heavy cream and bring to a gentle simmer. Whisk in Parmesan cheese and nutmeg until smooth and creamy. Season with salt and pepper to taste.
5
Wilt Spinach and Combine: Add baby spinach to the sauce and cook for 1–2 minutes until wilted. Return the cooked chicken to the skillet and stir to coat.
6
Scrape and Toss Squash: When the spaghetti squash is cool enough to handle, use a fork to scrape the strands into a large bowl. Add the squash strands to the skillet and toss everything together until well combined and heated through.
7
Serve and Garnish: Serve immediately, garnished with chopped parsley and extra Parmesan, if desired.
Additional Information

Equipment Needed

  • Baking sheet
  • Chef's knife
  • Large skillet
  • Mixing bowls
  • Fork
  • Wooden spoon or spatula

Nutrition (Per Serving)

Calories 410
Protein 36g
Carbs 17g
Fat 23g

Allergy Information

  • Contains dairy (butter, cream, Parmesan cheese)
Evelyn Foster

Home cook sharing easy, nourishing recipes and helpful kitchen tips for everyday family meals.