Chicken Alfredo Spaghetti Squash is the perfect low carb dinner for anyone who wants creamy, cheesy comfort food without the heavy pasta. With juicy chicken breasts, golden roasted squash, and a velvety Alfredo sauce, this recipe delivers protein, flavor, and satisfaction in every bite. Simple, hearty, and weeknight-ready.
Why Chicken Alfredo Spaghetti Squash is the Perfect Low Carb Meal
The comfort of creamy Alfredo with fewer carbs
If you love Alfredo pasta but don’t want the carb overload, spaghetti squash is your secret weapon. Once roasted, the squash turns into golden strands that mimic pasta while adding a naturally sweet flavor. Tossing these strands with Alfredo sauce gives you the same creamy comfort of pasta night, only lighter and fresher. It’s a swap that satisfies without the sluggish feeling afterward.
Protein power for balanced dinners
Each serving of this recipe is loaded with lean chicken breast, bringing more than 50 grams of protein to the table. That means you’ll stay full longer and support your fitness goals with every bite. Paired with creamy sauce and cheesy topping, this meal balances indulgence with nourishment. If you’ve been looking for a lighter Alfredo dinner option, you’ll also enjoy a creative spin like this Zucchini Noodle Chicken Alfredo for another protein-friendly twist.
Recipe
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Chicken Alfredo Spaghetti Squash
- Total Time: 1 hr 35 mins
- Yield: 4 servings
Description
A creamy, protein-packed twist on classic Alfredo that swaps pasta for spaghetti squash, making it lighter yet just as satisfying.
Ingredients
- Spaghetti squash – 1 medium (about 4 lb / 1.8 kg), halved lengthwise, seeds removed
- Olive oil – 4 tbsp (60 ml), divided
- Kosher salt – to taste
- Black pepper – freshly ground, to taste
- Chicken breasts – 2 boneless, skinless (about 1 lb / 450 g)
- Garlic – 3 cloves, finely chopped
- Whole milk – 1 1/2 cups (360 ml)
- Chicken broth (low sodium) – 3/4 cup (180 ml)
- Heavy cream – 1 cup (240 ml)
- Parmesan cheese – 3/4 cup (75 g), finely grated
- Crushed red pepper flakes – pinch
- Mozzarella cheese – 1 cup (110 g), shredded
- Fresh parsley – chopped, for serving
Instructions
- Preheat oven to 400°F (200°C). Drizzle squash halves with 1 tbsp oil, season with salt and pepper, and place cut-side down on a baking sheet. Roast 30–35 minutes until tender.
- Let squash cool slightly. Scrape strands with a fork into a bowl and set aside, keeping shells for stuffing.
- Season chicken with salt and pepper. Heat 2 tbsp oil in a skillet over medium heat. Cook chicken until golden and fully cooked, about 8 minutes per side. Rest, then cut into bite-sized pieces.
- In the same skillet, heat remaining 1 tbsp oil. Add garlic and cook until fragrant, about 1 minute. Stir in milk and broth, bring to a simmer, then add cream, Parmesan, and red pepper flakes. Simmer until thickened, about 15 minutes.
- Toss squash strands with chicken and sauce. Spoon mixture back into squash shells.
- Top with mozzarella and bake until cheese melts, about 15 minutes.
- Serve hot, garnished with chopped parsley.
Notes
- For a veggie boost, stir in spinach or broccoli to the sauce.
- Cooked chicken can be prepared ahead and stored for up to 3 days.
- Leftovers reheat well in the oven at 350°F (175°C).
- Prep Time: 15 mins
- Cook Time: 1 hr 20 mins
- Category: Dinner
- Method: Baked
- Cuisine: American
Nutrition
- Serving Size: 1 squash boat
- Calories: 780
- Sugar: 9 g
- Sodium: 1180 mg
- Fat: 56 g
- Saturated Fat: 26 g
- Unsaturated Fat: 28 g
- Trans Fat: 1 g
- Carbohydrates: 15 g
- Fiber: 2 g
- Protein: 53 g
- Cholesterol: 217 mg
Step-by-Step Guide to Making Chicken Alfredo Spaghetti Squash
Prepping the spaghetti squash
Preheat your oven to 400°F. Slice the spaghetti squash lengthwise, remove the seeds, and drizzle the flesh with olive oil. Season lightly with salt and pepper, then place the halves cut-side down on a baking sheet. Roast for 30 to 35 minutes until tender and the edges caramelize slightly. After cooling, use a fork to scrape out the strands into a bowl, keeping the squash shells intact for stuffing.
Cooking the chicken and Alfredo sauce
While the squash roasts, heat olive oil in a skillet and cook the chicken breasts until golden and fully done, about 8 minutes per side. Let them rest before cutting into bite-sized pieces. In the same skillet, sauté garlic until fragrant, then add milk, broth, and cream. Stir in Parmesan and let it simmer until thickened. Season with salt, pepper, and a touch of red pepper flakes. Combine squash strands, chicken, and sauce, then stuff the mixture back into the squash shells. Top with mozzarella and bake until the cheese is bubbly and melty.
For another stuffed veggie dish that feels just as fun, try these Buffalo Chicken Stuffed Zucchini Boats for a different spin on weeknight comfort.
Nutritional Benefits of This Recipe
Macro-friendly breakdown
Chicken Alfredo Spaghetti Squash isn’t just delicious, it’s designed to keep your nutrition goals on track. Each serving brings about 780 calories, with 53 grams of protein, only 15 grams of carbohydrates, and 56 grams of fat. The protein helps support muscle recovery and keeps you satisfied for hours. Pairing it with lower carbs makes this dish a smart choice for anyone looking to balance energy levels without the crash you’d expect from pasta-heavy meals.
Why spaghetti squash makes a smart swap
Spaghetti squash is a star ingredient for more than its pasta-like strands. A cup has just 42 calories while offering fiber, potassium, and vitamin C. By replacing traditional pasta, you lighten the meal while still enjoying plenty of volume on your plate. That means you’ll feel full without overloading on carbs. If you enjoy high-protein pasta-inspired recipes, you’ll also love a flavorful option like this Protein Pasta Salad with Chicken that proves healthy eating can stay creative and satisfying.
Tips and Variations to Keep It Fresh
Flavor upgrades
You can keep this dish exciting by adding small twists to the classic version. Stir in sautéed spinach or broccoli for extra greens, or brighten the sauce with a squeeze of lemon. If you enjoy a little spice, a pinch of crushed chili flakes gives the Alfredo sauce a bold kick without overwhelming the creaminess. Switching up the cheese is another option—swap part of the mozzarella for provolone or fontina for a new layer of flavor.
Make-ahead and meal prep ideas
This recipe works well for meal prep. Roast the spaghetti squash and cook the chicken in advance, then store them in airtight containers. When ready to eat, simply warm them up and combine with fresh sauce for a quick dinner. Leftovers also reheat beautifully, making this a reliable choice for busy weeks. If creamy chicken dinners are your go-to, you’ll also enjoy the rich and flavorful High-Protein Marry Me Chicken that uses similar ingredients with a different twist.
Final Thoughts
Chicken Alfredo Spaghetti Squash proves that healthy meals don’t have to sacrifice comfort. By swapping pasta with roasted squash, you cut carbs while keeping all the creamy flavor that makes Alfredo so irresistible. With high protein from juicy chicken breasts and rich sauce, this dinner fuels your body while satisfying your cravings. Whether you’re cooking for family or meal prepping for the week, this recipe is bound to become a regular on your table.
