Have you ever found yourself craving the rich, creamy taste of Alfredo sauce but felt guilty indulging in it? Imagine this: a beautifully roasted spaghetti squash, tender and lightly sweet, filled with a lightened shamelessly creamy Alfredo sauce full of savory chicken, shallots, and cheese. As you dig your fork into the warm, comforting dish, it brings both satisfaction and a sense of health-consciousness. Not only does this Skinny Chicken Alfredo Stuffed Spaghetti Squash deliver on flavor, but it also makes mealtime a breeze with its straightforward preparation.
This dish is perfect for busy weeknights, providing a healthy yet hearty alternative to traditional pasta dishes. Packed with protein from rotisserie chicken and loaded with the goodness of vegetables, it’s also a great way to sneak in some extra nutrients for the family. Dive into this recipe for a delightful dinner that promises contentment without guilt!
Why Make This Recipe
There are plenty of good reasons to whip up Skinny Chicken Alfredo Stuffed Spaghetti Squash. For starters, it’s an excellent low-carb option for those looking to cut back on traditional pasta without sacrificing flavor or texture. You can enjoy a satisfying meal while adhering to your dietary goals, making it a win-win scenario.
The use of rotisserie chicken expedites the cooking process, allowing you to prepare dinner in a fraction of the time it typically takes. With minimal prep work involved, you can have a delicious meal ready in under an hour, perfect for any weeknight hustle.
Additionally, the dish is easily customizable for any taste preference. You can switch out ingredients, making it a flexible option for various dietary needs or simply to accommodate what you have available in your kitchen.
How to Make Skinny Chicken Alfredo Stuffed Spaghetti Squash
Ingredients
- 1 medium-sized spaghetti squash
- 2 Tbsp. extra-virgin olive oil
- 1/2 cup chopped shallots
- 3 garlic cloves, minced
- 2 Tbsp. all-purpose flour
- 2 cups 2% reduced-fat milk
- 2 Tbsp. fresh lemon juice
- 1/4 cup grated Parmesan cheese
- 1/2 tsp. kosher salt
- 1/2 tsp. freshly ground black pepper
- 2 cups shredded rotisserie chicken
- 1/2 cup shredded mozzarella cheese
- Finely chopped parsley for garnish

Directions
- Preheat your oven to 400°F (200°C). Carefully cut the spaghetti squash lengthwise from stem to tail using a large knife.
- Lightly coat the flesh with cooking spray and place the squash cut-side down on a baking sheet. Bake for 30 to 40 minutes until tender when pierced with a fork. Once done, let it sit until cool enough to handle.
- While waiting for the squash, heat the olive oil in a large skillet over medium heat. Add chopped shallots and minced garlic; sauté for about 3 minutes until soft and fragrant.
- Sprinkle in the flour and cook for an additional 2 minutes, stirring frequently. Gradually pour in the reduced-fat milk, whisking continuously to prevent lumps. Allow the mixture to simmer gently, thickening for about 3 to 4 minutes.
- Whisk in the lemon juice, grated Parmesan cheese, kosher salt, and freshly ground black pepper, then remove from heat and stir in the shredded rotisserie chicken.
- Using a fork, scrape out and discard the seeds of the spaghetti squash. Carefully scrape out the spaghetti-like strands and stir them into the chicken Alfredo mixture until well combined.
- Carefully fill the empty squash boats evenly with the chicken Alfredo mixture, then sprinkle mozzarella cheese over the top.
- Return to the oven and bake for another 10 minutes. Set your broiler to HIGH and broil for an additional 2 minutes, or until the cheese is bubbling and golden in spots. Remove from the oven and garnish with freshly chopped parsley before serving.
How to Serve Skinny Chicken Alfredo Stuffed Spaghetti Squash
Serve your Skinny Chicken Alfredo Stuffed Spaghetti Squash hot, allowing the flavors to meld together beautifully. For an attractive presentation, drizzle extra olive oil around the plates and sprinkle additional parsley on top. Pair this dish with a simple green salad or steamed vegetables for a complete meal. A crisp white wine or sparkling water can elevate the dining experience even further.
How to Store Skinny Chicken Alfredo Stuffed Spaghetti Squash
To store leftovers, place them in an airtight container and refrigerate. They will keep well for about 3 to 4 days. If you wish to freeze the stuffed squash, it can be wrapped tightly in foil or plastic wrap and stored in the freezer for up to 3 months. When ready to enjoy, thaw in the refrigerator overnight and reheat in the oven until heated through and bubbly. When using the microwave, cover the dish to prevent drying out.
Tips to Make Skinny Chicken Alfredo Stuffed Spaghetti Squash
- To save time, consider using a pre-cut or microwaved spaghetti squash.
- For a dairy-free version, substitute the milk with almond milk and use nutritional yeast instead of cheese.
- Avoid overwhelming your skillet; sauté the shallots and garlic in batches if necessary for even cooking.
- You can cook the squash ahead of time, allowing for a quicker meal prep.
- If the Alfredo sauce appears too thick, add a bit more milk for the desired consistency.
- Enhance the flavor by adding a pinch of red pepper flakes or Italian herbs.
- To keep the dish gluten-free, use a gluten-free flour blend instead of all-purpose flour.
- Make a double batch and freeze a portion for an easy dinner option later.
- For a gourmet twist, top with crispy pancetta or sautéed mushrooms.
- Transform leftovers into a delicious casserole by adding breadcrumbs on top before baking again.
Variations
Vegan Delight: Replace rotisserie chicken with sautéed mushrooms or chickpeas. Use cashew cream instead of milk and skip the cheese for a creamy finish.
Spicy Chicken Alfredo: Add diced jalapeños or a splash of hot sauce to the chicken mixture for a delightful kick that ramps up the flavor profile.
Mediterranean Spin: Incorporate sun-dried tomatoes, kalamata olives, and feta cheese, blending them into the chicken mixture for a vibrant Mediterranean flair.
Loaded Taco Style: Add taco seasoning to the Alfredo sauce and mix in black beans and corn. Top with avocado to give it a fresh spin.
Italian Herb Infusion: Mix in vibrant herbs like basil, oregano, and thyme to the chicken Alfredo mixture, offering a fragrant and tasty experience.
FAQs
Can I make this ahead of time?
Absolutely! You can prepare the stuffed spaghetti squash in advance. Store the filled squash in the refrigerator for up to 24 hours before baking.
How do I store leftovers?
Place any leftover stuffed squash in an airtight container in the fridge. It’ll stay fresh for about 3 to 4 days, making for a quick meal later!
Can I freeze this dish?
Yes, you can freeze the stuffed spaghetti squash. Simply wrap it tightly and store it in the freezer for up to 3 months. For best results, thaw overnight in the refrigerator before reheating.
What can I substitute for all-purpose flour?
If you need a gluten-free alternative, consider using a gluten-free flour blend or cornstarch to thicken the sauce without compromising texture.
How do I prevent the squash from sticking to the baking sheet?
Make sure to coat the squash and the baking sheet well with cooking spray or olive oil. You can also use parchment paper for easier removal.
Is this recipe suitable for a low-carb diet?
Yes, this dish is low in carbohydrates compared to traditional pasta dishes. Spaghetti squash is a fantastic alternative that allows you to enjoy a comforting meal without the carbs!
What if I don’t have a large skillet?
You can use a deep saucepan instead. Just ensure that it’s wide enough to allow for even cooking and stir-frying.
How do I know when it’s done?
The squash is done when it feels tender enough to be easily pierced with a fork, and the chicken Alfredo filling should be hot and bubbly after baking.

Skinny Chicken Alfredo Stuffed Spaghetti Squash
Ingredients
For the Spaghetti Squash
- 1 medium medium-sized spaghetti squash
- 2 Tbsp. extra-virgin olive oil
For the Alfredo Sauce
- 1/2 cup chopped shallots
- 3 cloves garlic, minced
- 2 Tbsp. all-purpose flour
- 2 cups 2% reduced-fat milk
- 2 Tbsp. fresh lemon juice
- 1/4 cup grated Parmesan cheese
- 1/2 tsp. kosher salt
- 1/2 tsp. freshly ground black pepper
- 2 cups shredded rotisserie chicken
- 1/2 cup shredded mozzarella cheese
- Finely chopped parsley for garnish
Instructions
Preparation
- Preheat your oven to 400°F (200°C). Carefully cut the spaghetti squash lengthwise from stem to tail using a large knife.
- Lightly coat the flesh with cooking spray and place the squash cut-side down on a baking sheet. Bake for 30 to 40 minutes until tender when pierced with a fork. Once done, let it sit until cool enough to handle.
Alfredo Sauce
- While waiting for the squash, heat the olive oil in a large skillet over medium heat. Add chopped shallots and minced garlic; sauté for about 3 minutes until soft and fragrant.
- Sprinkle in the flour and cook for an additional 2 minutes, stirring frequently. Gradually pour in the reduced-fat milk, whisking continuously to prevent lumps. Allow the mixture to simmer gently, thickening for about 3 to 4 minutes.
- Whisk in the lemon juice, grated Parmesan cheese, kosher salt, and freshly ground black pepper, then remove from heat and stir in the shredded rotisserie chicken.
Assembly and Baking
- Using a fork, scrape out and discard the seeds of the spaghetti squash. Carefully scrape out the spaghetti-like strands and stir them into the chicken Alfredo mixture until well combined.
- Carefully fill the empty squash boats evenly with the chicken Alfredo mixture, then sprinkle mozzarella cheese over the top.
- Return to the oven and bake for another 10 minutes. Set your broiler to HIGH and broil for an additional 2 minutes, or until the cheese is bubbling and golden in spots. Remove from the oven and garnish with freshly chopped parsley before serving.