Introduction to Spaghetti Squash Casserole
If you’re looking for a comforting, healthy meal that fits into your busy lifestyle, look no further than this Spaghetti Squash Casserole Recipe. It’s a delicious way to enjoy the goodness of spaghetti squash, paired perfectly with ground turkey and fresh vegetables, making it a delightful option for homemade-food lovers who crave nutritious meals without the hassle.
Spaghetti squash serves as a fantastic low-carb alternative to traditional pasta, allowing you to indulge without the guilt. Combined with lean ground turkey and colorful bell peppers, this dish not only satisfies your hunger but also fuels your body with essential nutrients. Plus, the added marinara sauce and melted cheese create a savory flavor profile that everyone will love!
Whether you’re a young professional juggling work and dinner prep or simply someone who enjoys creating wholesome meals, this casserole is designed to fit seamlessly into your routine. Try it out and discover how easy it is to prepare a dish that’s as comforting as it is nourishing.
Key Ingredients
Spaghetti Squash (1 large): This unique squash is the star of the dish, serving as a healthy, low-carb alternative to traditional pasta. When cooked, its flesh transforms into delicate strands that mimic spaghetti, making it a fun and nutritious base for the casserole.
Ground Turkey (1 pound): Lean and protein-packed, ground turkey is a fantastic choice for this casserole. It adds substantial flavor and helps keep the dish light and healthy compared to higher-fat meats.
Olive Oil (1 tablespoon): A staple in many kitchens, olive oil adds richness and helps sauté the aromatic vegetables to perfection. It’s a heart-healthy fat that enhances the overall flavor profile of the dish.
Onion (1, diced): Onions provide a foundational flavor that enhances the savory profile of the casserole. When sautéed, they become sweet and caramelized, adding depth to the overall taste.
Garlic (2 cloves, minced): This aromatic ingredient is essential for infusing the casserole with robust flavor. Its pungent taste pairs wonderfully with the other ingredients, elevating the dish.
Red Bell Pepper (1, chopped) & Green Bell Pepper (1, chopped): These colorful veggies add crunch and sweetness, making the casserole vibrant and visually appealing. They also contribute essential vitamins and minerals.
Italian Seasoning (1 teaspoon): This blend of herbs is perfect for bringing an Italian flair to the dish, enhancing its flavor profile with a mix of basil, oregano, and thyme.
Salt (1 teaspoon) & Black Pepper (1/2 teaspoon): Essential seasonings that elevate the flavors of the ingredients, ensuring the dish is well-seasoned and balanced.
Marinara Sauce (1 cup): This rich, tomato-based sauce ties the dish together, adding moisture and a burst of flavor that complements the spaghetti squash and turkey.
Shredded Mozzarella Cheese (1 cup) & Grated Parmesan Cheese (1/4 cup): These cheeses create a delicious, bubbly topping that brings a comforting, cheesy element to the casserole, making it irresistible.
Why You’ll Love This Recipe
Spaghetti Squash Casserole Recipe is not just a meal; it’s an experience that combines ease with delightful flavors. Perfect for busy weeknights, this casserole is a one-dish wonder that brings together wholesome ingredients without compromising on taste.
Imagine digging into a warm, cheesy casserole that’s as satisfying as it is healthy. With the spaghetti squash providing a unique texture, and the ground turkey adding a hearty touch, every bite is filled with flavor and nutrition. Plus, the colorful bell peppers not only brighten the dish but also pack in essential vitamins, making it a wholesome choice for anyone looking to eat well.
This recipe is incredibly versatile, allowing you to customize it with your favorite vegetables or spices. It’s also perfect for meal prep, as it can be made ahead of time and stored in the refrigerator for quick reheating. Whether you’re a young professional balancing a hectic schedule or a homemade-food lover looking for comfort without the guilt, this casserole is sure to become a staple in your kitchen!
Variations
Adding Extra Vegetables
One of the best parts about the Spaghetti Squash Casserole Recipe is its versatility. You can easily incorporate additional vegetables like zucchini, mushrooms, or spinach to boost the nutritional value and flavor. These veggies not only add color but also enhance the texture, making each bite even more enjoyable.
Vegetarian Option
For a meat-free alternative, substitute the ground turkey with lentils or chickpeas. This variation retains the hearty feel of the casserole while making it plant-based. The lentils will absorb the flavors of the marinara sauce, ensuring that you still get a satisfying dish.
Spice It Up
If you’re looking to add a kick to your casserole, consider mixing in some crushed red pepper flakes or a dash of cayenne pepper. This will give your dish a warm, spicy flavor that complements the sweetness of the bell peppers and the richness of the cheese.
Cheese Alternatives
Feel free to experiment with different types of cheese. For a sharper taste, try using aged cheddar or a pepper jack cheese for an extra zing. You can even use dairy-free cheese if you’re following a vegan diet, allowing everyone to enjoy this comforting meal without compromise.
These variations make the Spaghetti Squash Casserole not only a satisfying meal but also a creative canvas for your culinary adventures!

Cooking Tips and Notes
Perfectly Cooked Spaghetti Squash
To ensure your spaghetti squash is perfectly tender, avoid overcooking it. Check for doneness by piercing it with a fork; if it slides in easily, it’s ready. Remember, the cooking time may vary based on the size of your squash.
Sautéing for Flavor
When sautéing the onion and garlic, allow them to become fragrant and slightly golden. This step builds a flavor foundation for your casserole, enhancing the overall taste of the dish. Don’t rush this process!
Make-Ahead Convenience
One of the great advantages of the Spaghetti Squash Casserole Recipe is that it can be made ahead of time. Prepare the casserole in advance and store it in the refrigerator. Just reheat it in the oven before serving, making weeknight dinners a breeze.
Customize to Your Taste
Feel free to customize the recipe based on your preferences! You can add different vegetables, switch up the cheeses, or even try adding herbs like fresh basil or parsley for an extra burst of flavor. This adaptability will keep your meals exciting and enjoyable!
Serving Suggestions
Pairing with Sides
To create a complete meal, consider serving your Spaghetti Squash Casserole with a fresh green salad or steamed vegetables. The crispness of a simple arugula salad with lemon vinaigrette contrasts beautifully with the warm, cheesy casserole, adding a refreshing touch.
Perfect for Meal Prep
This casserole is also ideal for meal prep. Make a larger batch on the weekend and portion it out for quick lunches or dinners throughout the week. Pair it with whole-grain bread or a side of fruit for a balanced meal that’s easy to grab and go.
Enjoying Leftovers
If you have leftovers, they can be easily reheated in the microwave or oven. Consider adding a sprinkle of fresh herbs or a dash of hot sauce to revitalize the flavors. This flexibility makes the dish not only delicious but also convenient for busy lifestyles.

Time Breakdown
Preparation
The preparation for the Spaghetti Squash Casserole takes about 15 minutes. During this time, you’ll be gathering your ingredients, cutting the spaghetti squash, and prepping the vegetables.
Cooking/Baking
The cooking and baking process takes around 1 hour. This includes baking the spaghetti squash and then cooking the turkey and vegetables before assembling the casserole for its final bake.
Total
In total, you’ll need about 1 hour and 15 minutes from start to finish to enjoy this delicious meal.
Efficiency Tip: To save time, consider prepping the vegetables and the squash ahead of time. This way, you can quickly assemble and bake the casserole on busy weeknights.
Nutritional Facts
Understanding the nutritional profile of the Spaghetti Squash Casserole Recipe is essential for health-conscious eaters. Each serving, which is approximately 1 cup, contains about 300 calories. This dish is rich in protein, providing 25 grams per serving, while also being low in sugar at just 5 grams. Additionally, it offers a balanced mix of carbohydrates and fats, with 25 grams of carbs and 14 grams of fat, making it a satisfying meal option.
This casserole not only delivers on taste but also provides significant nutritional benefits, including fiber (5 grams) and essential vitamins from the vegetables. It’s a gluten-free meal that fits well into various dietary preferences, making it a versatile choice for everyone.
FAQ
Can I use other types of meat in the casserole?
Absolutely! While this Spaghetti Squash Casserole Recipe features ground turkey, you can easily substitute it with ground chicken, beef, or even plant-based proteins like lentils or tempeh for a vegetarian option.
How do I store leftovers?
Leftovers can be stored in an airtight container in the refrigerator for up to four days. Reheat in the oven or microwave until warmed through. This dish is great for meal prep!
Is spaghetti squash nutritious?
Yes, spaghetti squash is a low-calorie vegetable rich in vitamins and fiber. It provides a healthy alternative to traditional pasta, making it a fantastic choice for a nutritious meal.
Can I freeze this casserole?
Yes, you can freeze the casserole! Just make sure to let it cool completely before transferring it to a freezer-safe container. It can be frozen for up to three months. When ready to eat, thaw in the refrigerator overnight and reheat in the oven.
Conclusion
The Spaghetti Squash Casserole Recipe is a fantastic choice for anyone looking to enjoy a comforting and healthy meal. With its delightful combination of spaghetti squash, ground turkey, and vibrant vegetables, this dish is both satisfying and nutritious. Not only does it cater to those seeking gluten-free options, but it also provides a hearty serving of protein and fiber, making it perfect for busy young professionals who appreciate homemade meals.
This casserole is not just easy to prepare; it’s also versatile. You can customize it with your favorite vegetables or spices, ensuring that it remains a staple in your meal rotation. Plus, with the option to make it ahead of time, you can enjoy a delicious home-cooked meal even on your busiest days. So why wait? Try this Spaghetti Squash Casserole today and indulge in a healthy, flavorful dish that the whole family will love!
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Spaghetti Squash Casserole Recipe
- Total Time: 1 hour 15 minutes
- Yield: 6 servings 1x
- Diet: Gluten-Free
Description
A delicious and healthy casserole made with spaghetti squash, ground turkey, and vegetables, perfect for a comforting meal.
Ingredients
- 1 large spaghetti squash
- 1 pound ground turkey
- 1 tablespoon olive oil
- 1 onion, diced
- 2 cloves garlic, minced
- 1 red bell pepper, chopped
- 1 green bell pepper, chopped
- 1 teaspoon Italian seasoning
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 cup marinara sauce
- 1 cup shredded mozzarella cheese
- 1/4 cup grated Parmesan cheese
Instructions
- Preheat the oven to 375°F (190°C).
- Cut the spaghetti squash in half and remove the seeds. Place the halves cut-side down on a baking sheet and bake for 30-40 minutes, until tender.
- While the squash is baking, heat olive oil in a large skillet over medium heat. Add diced onion and garlic, and sauté until softened.
- Add ground turkey and cook until browned. Stir in bell peppers, Italian seasoning, salt, and pepper, cooking until the peppers are tender.
- Remove the cooked spaghetti squash from the oven and scrape out the strands with a fork.
- Add the spaghetti squash strands to the skillet with the turkey mixture, then pour in marinara sauce and mix well.
- Transfer the mixture to a baking dish, top with mozzarella and Parmesan cheese, and bake for an additional 15-20 minutes until the cheese is bubbly and golden.
- Let it cool for a few minutes before serving.
Notes
- This dish can be made ahead of time and stored in the refrigerator.
- Feel free to add more vegetables for extra nutrition.
- Prep Time: 15 minutes
- Cook Time: 1 hour
- Category: Main Dish
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 cup
- Calories: 300
- Sugar: 5g
- Sodium: 650mg
- Fat: 14g
- Saturated Fat: 4g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 25g
- Fiber: 5g
- Protein: 25g
- Cholesterol: 80mg
