If you’re a devoted cheese lover seeking a satisfying, low-carb meal, prepare to be delighted! This Low-Carb Cheesy Chicken Spaghetti is a game-changer, artfully crafted with nutrient-rich spaghetti squash nestled in a creamy, cheesy, and subtly spicy sauce. It’s a comforting dish that delivers on flavor without derailing your healthy eating goals.

The Ultimate Low-Carb Cheesy Chicken Spaghetti: A Healthier Take on a Classic
Eating healthier shouldn’t mean sacrificing the nostalgic flavors of your childhood favorites. This incredible chicken spaghetti recipe proves just that! As the spaghetti squash, tender chicken, and rich cheese mingle with aromatic tomatoes and peppers during cooking, your kitchen will fill with an irresistible aroma, building anticipation for a truly satisfying meal.
This dish reimagines classic spaghetti, swapping traditional pasta for nutrient-packed spaghetti squash. It’s not just a meal; it’s an experience that brings comfort and joy to your dinner table, all while keeping carbs in check. Whether you’re following a keto lifestyle, a low-carb diet, or simply looking for a delicious and wholesome dinner, this recipe is designed to please.

One of the best aspects of this Cheesy Chicken Spaghetti is its versatility and appeal to the whole family. It’s an ideal recipe for a busy weeknight or a relaxed weekend dinner. If you have younger eaters or family members who prefer traditional pasta, simply prepare some regular noodles on the side. The rich, flavorful sauce pairs beautifully with elbow macaroni or classic spaghetti, ensuring everyone enjoys a delicious meal tailored to their preference. It’s a smart way to introduce healthier alternatives without compromising on taste for anyone.
Mastering Spaghetti Squash: Your Go-To Low-Carb Pasta Alternative
Spaghetti squash is an incredible vegetable that serves as a fantastic low-carb, gluten-free, and nutrient-rich substitute for traditional pasta. Its mild flavor and unique strand-like texture, which emerges after cooking, make it the perfect base for hearty sauces like our cheesy chicken creation. Learning how to properly cook spaghetti squash is key to unlocking its full potential, and luckily, there are several easy methods.
For speed and convenience, the Instant Pot is a game-changer. You’ll find detailed instructions in the recipe card below, but the process is remarkably simple: halve the spaghetti squash, scoop out the seeds, add just one cup of water to your Instant Pot, place the squash halves inside, and cook on HIGH pressure for merely 7 minutes. A quick release of pressure, and you’re left with perfectly tender strands, ready to be scraped out and used in your dish. It truly is that quick and efficient, especially when you’re short on time.

Another excellent method, yielding a slightly sweeter and caramelized flavor, is roasting spaghetti squash in the oven. Simply halve the squash, remove the seeds, brush with a little olive oil, season with salt and pepper, and roast cut-side down until fork-tender. This method allows you to cook both halves simultaneously, making it ideal for meal prepping. You can roast the squash ahead of time and store the cooked strands in the refrigerator until you’re ready to assemble your Cheesy Chicken Spaghetti Casserole. This forward-thinking approach significantly cuts down on active cooking time when you’re ready to make the full recipe, making it a perfect choice for busy individuals and families.
Crafting the Perfect Cheesy Chicken Base for Your Keto Spaghetti
The chicken is the heart of this satisfying Keto Chicken Spaghetti Squash recipe, and the good news is that nearly any type of cooked chicken will work beautifully. The key is ensuring it’s shredded or cut into small, bite-sized pieces so it blends seamlessly with the spaghetti squash strands and the creamy sauce. Chicken breasts or boneless, skinless chicken thighs are excellent choices, offering lean protein and a versatile flavor profile.
For ultimate convenience, using a store-bought rotisserie chicken is a fantastic shortcut that can shave precious minutes off your prep time. Simply shred the meat, and you’re halfway there! Alternatively, if you’ve prepared roasted chicken earlier in the week, this recipe is a brilliant way to transform those leftovers into an entirely new and exciting meal. This flexibility makes it a go-to option for efficient meal planning and reducing food waste.

If you’re starting with raw chicken, you can easily boil or bake it until cooked through, then shred it with two forks. Whichever method you choose, the goal is tender, flavorful chicken that will meld perfectly with the cheesy sauce. In fact, if you already have both cooked chicken and cooked spaghetti squash on hand, this entire recipe can be assembled and baked in under 30 minutes. This highlights the incredible efficiency and meal-prep friendly nature of this Cheesy Baked Spaghetti Squash dish, allowing you to enjoy a wholesome, homemade meal even on your busiest days.
Assembling Your Delectable Cheesy Chicken Spaghetti Casserole
Once your spaghetti squash is cooked and your chicken is shredded, the magic truly begins as you bring all the components together to form this delightful Cheesy Chicken Spaghetti. The creamy base of this dish is what sets it apart, providing a rich, indulgent texture that perfectly coats every strand of squash and every piece of chicken. A blend of cream cheese and sour cream creates a luscious, tangy foundation, which is easily softened in the microwave to ensure a smooth, lump-free mixture.

To this creamy mixture, garlic powder adds an aromatic depth, and a can of ROTEL tomatoes with green chilies introduces a vibrant burst of flavor and a gentle kick of spice. ROTEL is a fantastic ingredient for adding complexity without requiring extra chopping. If you prefer more heat, don’t hesitate to choose a “hot” variety of ROTEL or even add a dash of your favorite hot sauce or some finely diced fresh jalapeños to the mix. For those who prefer a milder flavor, drained diced tomatoes can be used as a substitute.

Once the creamy, spicy mixture is thoroughly combined, it’s folded into the shredded chicken and spaghetti squash. This hearty mixture is then transferred to a baking dish and generously topped with shredded cheddar cheese, creating that irresistible golden-brown crust we all love. Baking at 350°F (175°C) for approximately 20 minutes allows the flavors to meld beautifully, the cheese to melt into a bubbly, golden blanket, and the casserole to heat through perfectly. This final baking step is where all the individual ingredients transform into a cohesive and incredibly satisfying Cheesy Chicken Spaghetti Squash Casserole.
Garnish & Serving: Elevating Your Low-Carb Chicken Spaghetti
While the Cheesy Baked Spaghetti Squash is undeniably delicious straight from the oven, the optional garnishes of fresh parsley and crumbled bacon truly elevate the dish, adding layers of flavor and texture that shouldn’t be missed. Freshly chopped parsley provides a vibrant, herbaceous counterpoint to the richness of the cheese and chicken, brightening each bite and adding a touch of freshness. Its slight peppery notes cleanse the palate and enhance the overall experience.

And let’s be honest, everything is better with bacon! Crumbled bacon adds an irresistible smoky, salty crunch that contrasts wonderfully with the soft spaghetti squash and creamy sauce. For those committed to a low-carb or keto lifestyle, remember to choose bacon that has no sugar added. Look for varieties explicitly labeled “sugar-free” or avoid any bacon that lists “maple” or other sweeteners in its ingredients. These seemingly small additions make a big difference in the final presentation and taste, transforming a simple casserole into a gourmet-style meal.
Meal Prep, Storage, and Reheating for Busy Lifestyles
This Low-Carb Cheesy Chicken Spaghetti is not only a fantastic dinner option but also makes for incredible leftovers, which can be a lifesaver on busy days. In fact, many find that the flavors deepen and meld even further after a day or two in the refrigerator, making it even more delicious. To store, simply transfer any leftover spaghetti to an airtight container and refrigerate for up to 5 days. This makes it an ideal candidate for meal prepping, allowing you to enjoy a wholesome, home-cooked meal throughout the week with minimal effort.

When you’re ready to enjoy your leftovers, you have a couple of excellent reheating options. For a quick and easy solution, the microwave works perfectly; simply heat until warmed through. However, for those who appreciate a slightly crispier texture, especially for the spaghetti squash strands, reheating in a skillet on the stove is highly recommended. A quick sauté over medium heat will revive the flavors and textures beautifully, ensuring your reheated Low-Carb Chicken Spaghetti is just as enjoyable as when it was freshly made.
Perfect Pairings: What to Serve with Your Cheesy Chicken Spaghetti
To complete this hearty and satisfying meal, consider pairing your Cheesy Chicken Spaghetti with some delicious low-carb side dishes. For those who miss bread with their pasta, keto garlic knots offer a perfect, guilt-free substitute that provides a wonderful texture and complementary flavor. Alternatively, a serving of low-carb garlic mashed cauliflower makes an excellent side, adding another layer of creamy comfort to your plate.
You could also serve it with a crisp green salad tossed with a light vinaigrette to add freshness, or alongside steamed vegetables like green beans, broccoli, or asparagus for a well-rounded and nutritious family dinner. These thoughtful pairings ensure that you not only have a filling meal but also one that is perfectly balanced and utterly delicious. Now, you have all the components for a truly memorable and healthy family dinner!
Low-Carb Cheesy Chicken Spaghetti Recipe Card
This recipe for Low-Carb Cheesy Chicken Spaghetti is a fantastic way to enjoy classic comfort food while sticking to a low-carb or keto lifestyle. It’s simple to make, incredibly satisfying, and perfect for the whole family.
Low-Carb Cheesy Chicken Spaghetti
A delicious and healthy alternative to traditional spaghetti, featuring tender chicken, a rich cheesy sauce, and spaghetti squash strands.
Course: Dinner
Cuisine: American
Keyword: chicken spaghetti, low carb, keto
Prep Time: 15 minutes
Cook Time: 27 minutes
Total Time: 42 minutes
Servings: 4 people
Calories: 195 kcal
Ingredients
- 1 medium Spaghetti Squash
- 12 ounces Shredded Chicken (cooked)
- 1 cup Shredded Cheddar Cheese
- 3 ounces Cream Cheese (softened)
- 1 ounce Sour Cream
- 1 tsp Garlic Powder
- 1 can (14.7 ounces) ROTEL Tomatoes with Green Chilies (undrained)
Optional Garnish:
- Fresh Parsley, chopped
- Crumbled Bacon (sugar-free)
Instructions
Spaghetti Squash Preparation (Instant Pot Method):
- Slice the spaghetti squash in half lengthwise and scoop out the seeds.
- Place the squash halves in your Instant Pot with 1 cup of water.
- Cook on HIGH PRESSURE for 7 minutes, then perform a quick release of pressure.
- Once cooled slightly, scrape out the spaghetti-like strands into a large bowl.

Main Recipe Assembly:
- Preheat your oven to 350°F (175°C).
- In a separate medium-sized bowl, combine the softened cream cheese and sour cream. Microwave for approximately 30 seconds to further soften and easily stir together until smooth.
- Add garlic powder and the can of ROTEL tomatoes with green chilies (undrained) to the cream cheese mixture. Mix well until all ingredients are thoroughly combined and fragrant.
- Combine the ROTEL mixture with the shredded chicken and the prepared spaghetti squash strands in the large bowl. Stir gently until everything is evenly coated.
- Pour the entire mixture into a baking dish (a 9×13 inch dish or similar size works well).
- Evenly top the casserole with the shredded cheddar cheese.
- Bake in the preheated oven for 20 minutes, or until the cheese is melted, bubbly, and lightly golden brown, and the casserole is heated through.
- Remove from the oven. Garnish with fresh chopped parsley and crumbled sugar-free bacon (if using) before serving hot.




Recipe Notes
Calories: 195 kcal
Net Carbs: Approximately 6 Net Carbs Per Serving
The nutritional information provided for this recipe is calculated as a courtesy and is an approximate only. We cannot guarantee the absolute accuracy of the nutritional information for any recipes on this site. Please verify with your own calculations if precise nutritional data is required.
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Explore More Keto-Friendly Spaghetti Alternatives
If you’ve fallen in love with this versatile Low-Carb Cheesy Chicken Spaghetti recipe, you’re in for a treat! There’s a whole world of keto-friendly “spaghetti” recipes waiting to be discovered, all designed to deliver the comfort and satisfaction of classic pasta dishes without the high carb count. Explore these other fantastic options that prove healthy eating can be incredibly delicious and diverse:
- Creamy Low-Carb Spinach Feta Spaghetti Squash Boats
- Keto Baked Spaghetti
- Low-Carb Spaghetti and Meatballs
- Keto Spaghetti Salad
- Low-Carb Spaghetti Zoodles Recipe
