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Creamy Chicken Spaghetti Squash Carbonara (Low-Carb & Gluten-Free Comfort Food)

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🍗🎃 Craving comfort without the carbs? This Creamy Chicken Spaghetti Squash Carbonara is your new low-carb, gluten-free favorite! Tender roasted squash strands replace pasta, paired with juicy chicken and a rich, garlicky carbonara sauce. 🧄🧀 It’s light, creamy, and loaded with flavor—perfect for cozy nights or guilt-free seconds. Who says healthy can’t be indulgent? This dish delivers all the creamy goodness with none of the carb crash! 💛✨

  • Total Time: 1 hour
  • Yield: 6 servings 1x

Ingredients

Scale
  • 1 large spaghetti squash (about 34 lbs)
  • 1 tablespoon olive oil
  • Salt and freshly ground black pepper, to taste
  • 1 pound boneless, skinless chicken breast or thigh, diced into small cubes
  • 1 small yellow onion, finely chopped
  • 3 cloves garlic, minced
  • 2 large eggs
  • ½ cup freshly grated Parmesan cheese (plus more for topping)
  • 1 tablespoon chopped fresh flat-leaf parsley (plus more for garnish)

Optional Add-ins:

  • ¼ teaspoon red pepper flakes (for a bit of heat)
  • ½ teaspoon Italian seasoning (for additional herb flavor)

Preparation Tips:

  • Use a sharp chef’s knife to cut the spaghetti squash in half lengthwise.
  • Choose a firm, medium-to-large spaghetti squash to ensure you have enough strands for 4 to 6 servings.
  • Use freshly grated cheese for the best melt and flavor. Pre-shredded cheeses may include anti-caking agents that can affect the texture of the sauce.
  • Have all ingredients prepped and ready before starting the cooking process. Once the squash is roasted and chicken cooked, the dish comes together quickly.

Instructions

1. Roast the Spaghetti Squash:

  • Preheat your oven to 400°F (200°C).
  • Carefully slice the spaghetti squash in half lengthwise and scoop out the seeds using a spoon.
  • Drizzle the inside of each half with olive oil, then season with salt and pepper.
  • Place both halves cut-side down on a parchment-lined baking sheet.
  • Roast for 35 to 45 minutes, or until the squash is tender and the skin can be easily pierced with a fork.
  • Remove from the oven and let cool slightly before using a fork to scrape the flesh into spaghetti-like strands. Set aside.

2. Cook the Chicken and Aromatics:

  • While the squash is roasting, heat a large skillet over medium heat and add a tablespoon of olive oil.
  • Add the diced chicken to the skillet, seasoning with salt and pepper. Sauté until fully cooked and lightly golden, about 7–9 minutes.
  • Remove the chicken from the pan and set aside.
  • In the same pan, add a bit more oil if needed and sauté the chopped onion until translucent, about 4–5 minutes.
  • Add minced garlic and cook for another 1–2 minutes, stirring frequently to prevent burning.

3. Make the Sauce Base:

  • In a medium bowl, whisk together the eggs and grated Parmesan cheese until well blended.
  • You can add a small pinch of black pepper or red pepper flakes at this stage for flavor depth.

4. Combine Everything:

  • Reduce the skillet heat to low.
  • Return the cooked chicken to the skillet along with the sautéed onions and garlic.
  • Add the spaghetti squash strands to the skillet, gently mixing everything together.
  • Slowly pour the egg and cheese mixture into the pan while stirring constantly.
  • Continue stirring until the sauce gently thickens and evenly coats all the ingredients. This should take about 2–3 minutes.
  • Be sure not to overheat, or the eggs may scramble. The residual heat will cook the eggs gently and create a creamy sauce.
  • Sprinkle in the fresh parsley and give the dish a final stir.

Notes

  • Avoid overheating the egg mixture: Add the sauce off the heat or on very low heat and stir continuously to create a creamy texture. High heat will cause the eggs to scramble.
  • Add protein variety: If you’re not a fan of chicken breast, boneless chicken thighs or ground chicken also work well and add a richer flavor.
  • Make it ahead: You can roast the spaghetti squash up to 3 days in advance and store it in the fridge until you’re ready to use it.
  • For added creaminess: Stir in a splash of unsweetened almond milk or heavy cream before adding the egg mixture, but this is completely optional.
  • Use tongs to toss: Tongs help evenly coat the squash and chicken with the creamy sauce.
  • Author: Rosa
  • Prep Time: 15 minutes
  • Cook Time: 45 minutes
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