Chicken and Spinach Spaghetti Squash

A close-up of Chicken and Spinach Spaghetti Squash Alfredo with golden roasted squash strands, creamy white sauce, and wilted green spinach leaves. Save
A close-up of Chicken and Spinach Spaghetti Squash Alfredo with golden roasted squash strands, creamy white sauce, and wilted green spinach leaves. | pinbitekitchen.com

This satisfying bowl combines tender roasted spaghetti squash strands with juicy seasoned chicken and wilted fresh spinach, all coated in a velvety homemade Alfredo sauce. The sauce starts with fragrant garlic and butter, enriched with heavy cream and freshly grated Parmesan, finished with a hint of warming nutmeg. Everything comes together in one skillet for a complete meal that's naturally gluten-free and low in carbohydrates while delivering all the comfort of classic Italian-American cuisine.

The first time I made spaghetti squash, I stood in my kitchen absolutely mesmerized by those golden strands appearing like magic from inside an ordinary vegetable. My roommate walked in, saw me enthusiastically scraping away with a fork, and asked if I'd lost my mind. That was seven years ago, and now this creamy Alfredo version has become the dish my friends actually request for dinner parties.

Last winter, my sister was recovering from surgery and couldn't eat anything too heavy but was craving something comforting. I brought over a huge container of this chicken and spinach version, and she texted me at midnight to say she'd finished every bite. Sometimes the best medicine is just really good food that happens to be good for you too.

Ingredients

  • 1 large spaghetti squash: Look for one that feels heavy for its size with a hard, dull rind, and avoid any soft spots
  • 2 tsp olive oil: This helps the squash caramelize while roasting and keeps it from drying out
  • 2 boneless skinless chicken breasts: Dicing the chicken before cooking means every bite gets perfectly seasoned and cooks evenly
  • 4 cloves garlic: Don't be shy with fresh garlic here, it's the backbone of that authentic Italian flavor
  • 1 cup heavy cream: Room temperature cream incorporates more smoothly into the sauce without breaking
  • 1 cup freshly grated Parmesan: Pre-grated cheese has anti-caking agents that make sauces grainy, so grate it yourself
  • 4 cups fresh baby spinach: The spinach wilts down dramatically, so don't be alarmed by how much you start with
  • 1/4 tsp ground nutmeg: This secret ingredient adds warmth and depth that makes the sauce taste restaurant-quality

Instructions

Roast the spaghetti squash:
Preheat your oven to 400°F, slice the squash in half lengthwise, scoop out those seeds, drizzle with olive oil and season with salt and pepper, then place cut-side down on a parchment-lined baking sheet and let it roast for 35-40 minutes until tender.
Cook the seasoned chicken:
While the squash does its thing, heat olive oil in a large skillet over medium-high heat and add your diced chicken with salt, pepper, and Italian seasoning, sautéing for 6-8 minutes until it's cooked through and has those lovely golden edges.
Build that creamy sauce:
In the same skillet, melt butter over medium heat, add minced garlic for just one minute until fragrant, pour in the heavy cream and bring to a gentle simmer, then whisk in Parmesan and nutmeg until everything's silky smooth.
Bring it all together:
Stir in the spinach until wilted, return the chicken to the skillet, then scrape all those gorgeous squash strands into the mix and toss everything together until heated through and well combined.
This low-carb Chicken and Spinach Spaghetti Squash Alfredo is served in a rustic bowl, garnished with fresh parsley and grated Parmesan cheese. Save
This low-carb Chicken and Spinach Spaghetti Squash Alfredo is served in a rustic bowl, garnished with fresh parsley and grated Parmesan cheese. | pinbitekitchen.com

This recipe has become my go-to for Sunday meal prep because it actually reheats beautifully, unlike so many other low-carb dishes. There's something so satisfying about opening the fridge on Tuesday and knowing I have this waiting for me.

Making It Ahead

I've learned through trial and error that roasting the squash ahead of time works perfectly, but the sauce is best made fresh. Keep the roasted squash strands in the fridge for up to three days, then just reheat and toss with hot sauce when you're ready to eat.

Sauce Secrets

The temperature of your cream matters more than you'd think. Cold cream hitting hot butter can cause separation, while room temperature cream incorporates seamlessly into the sauce, giving you that perfectly smooth restaurant texture every time.

Serving Suggestions

This dish is substantial enough to stand alone, but a crisp green salad with lemon vinaigrette cuts through the richness beautifully. Some garlic bread on the table never hurt anyone either.

  • A glass of Pinot Grigio complements the creamy sauce perfectly
  • Extra Parmesan at the table is never a bad idea
  • Fresh parsley adds brightness and makes the whole dish look gorgeous
A family-style skillet of Chicken and Spinach Spaghetti Squash Alfredo shows tender diced chicken and rich garlicky sauce ready for dinner. Save
A family-style skillet of Chicken and Spinach Spaghetti Squash Alfredo shows tender diced chicken and rich garlicky sauce ready for dinner. | pinbitekitchen.com

I hope this becomes one of those recipes you turn to again and again, the kind that makes your kitchen smell incredible and your people feel loved.

Common Recipe Questions

Pierce the squash with a fork and microwave for 2-3 minutes to soften slightly. Use a sharp chef's knife to slice lengthwise, applying steady pressure. Cut through the stem end last for easier control.

Substitute heavy cream with full-fat coconut milk or cashew cream. Use nutritional yeast or vegan Parmesan alternative in place of traditional Parmesan cheese.

Store in an airtight container in the refrigerator for up to 4 days. Reheat gently in a skillet over medium-low heat, adding a splash of cream if the sauce appears thickened.

Beyond spinach, try sautéed mushrooms, roasted red peppers, sun-dried tomatoes, or steamed broccoli. Add them when wilting the spinach so they heat through.

Absolutely. Shred about 2 cups of rotisserie chicken and add it during the final tossing step. This reduces cooking time by about 8 minutes.

Spaghetti squash is a winter vegetable that naturally separates into strand-like strands when cooked. It's not pasta but makes an excellent low-carb alternative with a mild, slightly sweet flavor.

Chicken and Spinach Spaghetti Squash

Tender chicken, spinach, and roasted spaghetti squash in a rich Parmesan cream sauce with garlic and nutmeg.

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

Ingredients

For the Spaghetti Squash

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

For the Chicken

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

For the Alfredo Sauce

  • 2 tablespoons unsalted butter
  • 4 cloves garlic, minced
  • 1 cup heavy cream
  • 1 cup freshly grated Parmesan cheese
  • 1/4 teaspoon 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
Prepare the 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 tablespoon 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
Add Vegetables and Chicken: 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
Combine and Serve: 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. 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)
Olivia Marsh

Sharing easy, wholesome recipes and kitchen tips for fellow food lovers.