Transform your weeknight dinner with this vibrant Low Calorie Spaghetti Squash with Marinara and Chicken. This wholesome, nutrient-dense meal offers the comforting satisfaction of pasta while keeping your macros perfectly balanced and your taste buds completely delighted.
Why You’ll Love This Low Calorie Spaghetti Squash with Marinara and Chicken
- It is naturally gluten-free and perfect for low-carb lifestyles.
- The recipe comes together in under an hour for quick weeknight dining.
- You get high-protein satisfaction from the lean shredded chicken breast.
- It delivers a comforting, cheesy experience without the heavy calories of pasta.
- The leftovers reheat beautifully for a quick lunch the next day.
- It is a budget-friendly way to feed a family with simple, fresh ingredients.
- The vibrant colors make this dish look like a gourmet restaurant creation.
Ingredients Needed
- 1 medium (3 lbs / 1.35 kg) Spaghetti Squash – look for one that feels heavy for its size with firm, unblemished skin.
- 2 cups (480ml) Low-sodium Marinara Sauce – select a brand with no added sugar for the cleanest flavor profile.
- 2 cups (300g) Cooked Chicken Breast, shredded – use rotisserie chicken for a time-saving hack or poach your own for maximum tenderness.
- 1 tablespoon (15ml) Olive Oil – choose extra virgin oil for a richer, more robust flavor.
- 1/2 cup (50g) Shredded Low-fat Mozzarella Cheese – buy a block and shred it yourself for better melting consistency.
- 1/4 cup (15g) Fresh Basil Leaves – pick leaves that are vibrant green and free of any dark spots.
- Salt and black pepper to taste – always use freshly cracked pepper for the most aromatic finish.
YOU MIGHT LOVE: Low Carb Unstuffed Cabbage Casserole Recipe – A hearty and comforting dish that perfectly complements your low-carb meal planning goals.
Essential Equipment
- A sharp Chef’s knife is crucial for safely cutting the tough squash shell.
- A sturdy baking sheet provides even heat distribution for roasting perfection.
- A large fork is essential for scraping the squash into beautiful, uniform strands.
- A medium saucepan ensures your sauce and chicken heat evenly before serving.
Recipe Overview
- Prep Time: 10 minutes
- Cook Time: 45 minutes
- Total Time: 55 minutes
- Servings: 4 servings
- Difficulty: Easy
Step-by-Step Instructions
Follow these simple steps to achieve a perfectly roasted, flavorful squash dish every time.
Phase 1: Roasting the Squash
- Preheat your oven to 400°F (200°C) to ensure a steady, hot environment.
- Cut the squash lengthwise, using a sawing motion for safety, and scoop out the seeds.
- Brush the interior with olive oil and season generously with salt and pepper.
- Roast cut-side down for 40 minutes until the skin yields to gentle pressure.
Phase 2: Preparing the Filling
- Scrape the flesh with a fork to create tender, golden spaghetti strands.
- Warm the marinara sauce in a saucepan over medium heat.
- Fold the shredded chicken into the sauce until it is thoroughly coated and steaming.
Phase 3: Assembly and Broil
- Divide the chicken-marinara mixture evenly into the prepared squash boats.
- Sprinkle the mozzarella over the top to create a gooey, melted layer.
- Broil for 2-3 minutes until the cheese bubbles and develops golden brown spots.
- Garnish with fresh basil ribbons and serve immediately.
CHECK OUT: Ground Turkey and Peppers: A Flavorful, Healthy, and Quick Meal – Another lean and delicious option that fits perfectly into your healthy dinner rotation.
Tips for Success
- Always roast the squash cut-side down to trap steam, which ensures the flesh stays moist.
- If the sauce appears too thick, stir in a splash of chicken broth or water to reach your desired consistency.
- Keep a close eye on the broiler, as cheese can transition from perfectly melted to burnt in seconds.
Variations & Substitutions
You can easily customize this recipe to fit your personal preferences and pantry staples.
- Add sautéed spinach or diced bell peppers to the sauce for an extra nutritional boost.
- Use turkey breast or chickpeas for a different protein source.
- Swap mozzarella for a sprinkle of parmesan or feta for a sharper, saltier finish.
Serving Suggestions
Pair this dish with light sides to maintain the low-calorie profile of your meal.
- Serve alongside a crisp green salad tossed with a light balsamic vinaigrette.
- Offer a side of roasted broccoli or asparagus seasoned with lemon zest.
- Pair with a refreshing sparkling water infused with cucumber or fresh mint.
Health Benefits
This meal provides a fantastic balance of macronutrients for a healthy lifestyle.
- Spaghetti squash is high in fiber, which aids in digestion and keeps you full longer.
- Lean chicken breast provides high-quality protein essential for muscle maintenance.
- Low-sodium marinara helps keep your heart healthy while delivering powerful antioxidants like lycopene.
Storage & Reheating
Proper storage ensures you can enjoy your leftovers throughout the week.
- Store leftovers in an airtight container in the refrigerator for up to 3 days.
- Reheat in the microwave or a low-temperature oven until the chicken is warmed through.
- Avoid freezing the squash, as the texture can become watery once thawed.

Frequently Asked Questions
Can I double this recipe?
Yes, simply use two squash and a larger baking sheet, ensuring you don’t crowd the oven.
How do I know when the squash is done?
The squash is ready when the skin is easily pierced with a fork and the strands pull away effortlessly.
Is it possible to make this vegan?
Absolutely, simply omit the chicken and replace the mozzarella with a vegan cheese alternative or nutritional yeast.
Can I use pre-cooked squash?
Yes, if you have leftover squash, simply heat it before adding the warm chicken and marinara mixture.
Why is my squash watery?
Ensure you roast it cut-side down and allow it to drain for a minute before adding the sauce.
More Delicious Dishes
- Creamy Garlic Parmesan Chicken Casserole: A decadent, comforting meal perfect for chilly evenings.
- Easy Cabbage Casserole: A simple, fiber-rich dish that the whole family will enjoy.
- Cheesy Chicken & Rice Casserole: A classic, crowd-pleasing dinner that is always a hit at the table.
Conclusion
This recipe proves that eating healthy doesn’t mean sacrificing comfort. Enjoy the rich flavors and wholesome ingredients of this fantastic squash dish tonight. Follow us on Facebook and Pinterest.

Low Calorie Spaghetti Squash with Marinara and Chicken
Ingredients
Equipment
Method
- Preheat your oven to 400°F (200°C).
- Cut the spaghetti squash in half lengthwise and remove the seeds.
- Brush the insides with olive oil, season with salt and pepper, and place cut-side down on a baking sheet.
- Bake for 40 minutes until the squash is tender.
- Scrape the squash flesh with a fork to create spaghetti-like strands.
- Warm the marinara sauce in a saucepan and stir in the shredded chicken.
- Divide the chicken and marinara mixture among the squash halves.
- Top each half with shredded mozzarella and broil for 2-3 minutes until the cheese is melted.
- Garnish with fresh chopped basil before serving.
