Spaghetti Squash Casserole is a delightful and nutritious dish that perfectly combines the unique texture of spaghetti squash with a medley of flavorful ingredients. This hearty casserole is not only a comforting meal that’s ideal for family dinners but also a fantastic way to incorporate more vegetables into your diet. With its cheesy goodness, savory seasonings, and satisfying components, it can easily become a staple in your weekly meal rotation.

Why You Will Love This Recipe
You will love this spaghetti squash casserole recipe for several reasons. First and foremost, the flavor is absolutely irresistible! The roasted spaghetti squash provides a subtle nutty base, while the combination of herbs, spices, and cheese elevates the dish to a whole new level. It’s also a breeze to prepare, making it a perfect option for busy weeknights. Additionally, this recipe fits wonderfully into low-carb, gluten-free, and vegetarian lifestyles, allowing almost anyone to enjoy it without compromising on taste or nutrition.
Tips and Tricks
To make your spaghetti squash casserole even more enjoyable, consider these tips and tricks:
- Roasting the Squash: For the best flavor and texture, roast the spaghetti squash until tender. This not only enhances its natural sweetness but also makes it easier to shred into strands.
- Sautéing Vegetables: Take the time to sauté vegetables like onions, garlic, and bell peppers before mixing them into the casserole. This will deepen their flavors and add richness to the dish.
- Cheese Choices: Opt for a blend of cheeses for a more complex flavor profile. Cheddar, mozzarella, and parmesan work beautifully together.
- Herb Infusion: Fresh herbs can take the flavor of your casserole to the next level. Consider adding fresh basil or parsley for brightness.
Common Mistakes to Avoid
Avoid these common pitfalls when making spaghetti squash casserole:
- Overcooking the Squash: Cooking the squash for too long can result in mushy strands. Keep an eye on it and test for doneness by piercing it with a fork.
- Under-seasoning: Don’t skimp on the seasonings! A well-seasoned dish makes all the difference. Taste and adjust as you go.
- Skipping the Cheese: Cheese adds a creamy texture and depth of flavor. Skipping it will leave your casserole feeling flat.
- Not Allowing It to Rest: Letting the casserole sit for a few minutes after baking allows the flavors to meld and makes it easier to serve.
Make Ahead Tips
For those who love meal prep or have a busy schedule, here’s how you can get a jumpstart on your spaghetti squash casserole:
- Cook the Squash in Advance: You can roast the spaghetti squash a day or two ahead. Store the strands in an airtight container in the refrigerator until you’re ready to assemble the casserole.
- Prep Your Veggies: Chop and sauté any vegetables you plan to use the day before to save time on cooking day.
- Assemble and Refrigerate: You can assemble the casserole up to a day ahead. Just cover it tightly and store it in the fridge until you’re ready to bake.
Recipe Variations
Feel free to get creative with your spaghetti squash casserole! Here are some variations to consider:
- Protein Boost: Add cooked ground turkey, chicken, or beef for a heartier meal.
- Vegetarian Delight: Load it up with more veggies like spinach, zucchini, or mushrooms for a meat-free option.
- Spicy Twist: Incorporate jalapeños or crushed red pepper flakes for a little heat.
- Different Cheeses: Use feta or goat cheese for a tangy flavor, or try a dairy-free cheese for a vegan option.

How to Serve
Serve your spaghetti squash casserole hot from the oven, garnished with freshly chopped parsley or basil for a pop of color. Consider pairing it with a simple side salad dressed in a light vinaigrette to balance the richness of the casserole. For a fun touch, serve it in individual ramekins for a more elegant presentation.
Pairing Suggestions
To complement your spaghetti squash casserole, consider these pairing suggestions:
- Wine: A glass of crisp Sauvignon Blanc or a light Pinot Noir would work nicely.
- Cocktails: A refreshing cucumber gin cocktail can brighten the meal.
- Side Dishes: Pair it with garlic bread or roasted vegetables for a complete dinner.
- Desserts: Finish off with a light dessert, such as lemon sorbet or a berry parfait.
How to Store
For any leftovers, store your spaghetti squash casserole in an airtight container in the refrigerator for up to three days. You can also freeze it for longer storage, up to three months. To reheat, bake in the oven at 350°F (175°C) until warmed through, or microwave individual portions for convenience.
Equipment Needed
You will need the following kitchen tools to make this casserole:
- Baking Dish: A 9×13 inch or similar sized baking dish is perfect for this recipe.
- Roasting Pan: For roasting the spaghetti squash.
- Sharp Knife: For cutting the squash and vegetables.
- Wooden Spoon or Spatula: To mix ingredients together.
If you don’t have a baking dish, consider using a cast iron skillet instead!
Dietary Adaptations
This spaghetti squash casserole can easily be adapted to fit various dietary needs:
- Vegan: Use nutritional yeast instead of cheese and substitute a plant-based protein for any meat.
- Dairy-Free: Swap traditional cheese for a dairy-free alternative made from nuts or soy.
- Nut-Free: Ensure any cheese alternatives are nut-free and focus on vegetables and grains for protein.
Seasonal Adaptations
Depending on the season, you can modify your casserole with different ingredients:
- Spring: Incorporate fresh herbs like dill or green peas for a vibrant twist.
- Summer: Use fresh tomatoes and zucchini to brighten the flavors.
- Fall: Add roasted butternut squash or sage for a cozy autumnal feel.
- Winter: Opt for hearty greens like kale or Swiss chard for added nutrition.
Cost Breakdown
The estimated cost for this spaghetti squash casserole is around $10-$15 for the whole dish, serving about 6. This means each serving comes in at approximately $2.50-$3. If you’re looking to save, consider using seasonal vegetables or store-brand ingredients to keep costs down.
Kitchen Hacks
Here are a few kitchen hacks to help you when making this casserole:
- Easier Squash Prep: Microwave the spaghetti squash for about 5-7 minutes before cutting it to make it easier to handle.
- Quick Cleanup: Line your baking dish with parchment paper for effortless cleanup.
- Efficient Sautéing: Use a large skillet to cook multiple vegetables at once, speeding up the prep time.
Recipe FAQs
1. Can I use a different type of squash?
Yes, you can substitute with butternut squash or zucchini, but cooking times may vary.
2. How long does it take to cook spaghetti squash?
Typically, it will take about 30-40 minutes to roast in the oven at 400°F (200°C).
3. Can I make this gluten-free?
Absolutely! All the ingredients used are naturally gluten-free, so there are no concerns here.
4. How can I make it spicier?
Add diced jalapeños or red pepper flakes to the mix!
Spaghetti Squash Casserole

Spaghetti Squash Casserole is a delightful and nutritious dish that perfectly combines the unique texture of spaghetti squash with a medley of flavorful ingredients. This hearty casserole is not only a comforting meal that’s ideal for family dinners but also a fantastic way to incorporate more vegetables into your diet.
Ingredients
- 1 medium spaghetti squash
- 1 cup chopped bell peppers
- 1 cup diced onion
- 2 cloves garlic, minced
- 2 cups shredded cheese (cheddar, mozzarella, or your choice)
- 1 teaspoon Italian seasoning
- Salt and pepper to taste
- 1 cup marinara sauce (optional)
- Fresh herbs for garnish (parsley or basil)
Instructions
- Preheat your oven to 400°F (200°C).
- Carefully cut the spaghetti squash in half lengthwise and scoop out the seeds.
- Place the squash halves cut-side down on a baking pan and roast for 30-40 minutes, or until tender.
- While the squash is roasting, heat a skillet over medium heat. Add olive oil and sauté the onions, garlic, and bell peppers until soft, about 5-7 minutes.
- Once the squash is cooked, let it cool slightly, then scoop out the strands into a large mixing bowl.
- Add the sautéed vegetables, marinara sauce (if using), half of the cheese, Italian seasoning, salt, and pepper. Mix well.
- Transfer the mixture into a greased baking dish and top with the remaining cheese.
- Bake for an additional 20-25 minutes, until the cheese is bubbly and golden.
- Remove from the oven and let cool for a few minutes before serving. Garnish with fresh herbs.
Nutrition Information
Yield
6Serving Size
1Amount Per Serving Calories 244Total Fat 14gSaturated Fat 7gTrans Fat 0gUnsaturated Fat 5gCholesterol 38mgSodium 518mgCarbohydrates 21gFiber 4gSugar 9gProtein 11g
Dinnerfocus.com, occasionally offers nutritional information for recipes contained on this site. This information is provided as a courtesy and is an estimate only. This information comes from online calculators. Although allchickenrecipes.com attempts to provide accurate nutritional information, these figures are only estimates.
Final Thoughts
In conclusion, this spaghetti squash casserole recipe is a versatile and delicious way to enjoy a healthy meal. It’s easy to make, packed with flavor, and perfect for a cozy dinner at home or meal prepping for the week ahead. I hope you enjoy making this dish as much as I do! Happy cooking!