Spaghetti Squash Casserole with Mushrooms & Goat Cheese

There's something heartwarming about uncovering a dish that combines comfort and health, and this Low-Carb Spaghetti Squash Casserole with Mushrooms and Goat Cheese is just that. As the leaves begin to turn and the air gets a bit crisper, I find myself craving cozy, satisfying meals that are also kind to my waistline. This casserole is bursting with flavors—from the earthy richness of sautéed mushrooms to the creamy tang of goat cheese, it’s a celebration of autumn in every bite.

Picture this: a satisfying dish that not only satisfies your hunger but also nourishes your body. Perfect as a fulfilling main course or an inviting side, this casserole can elevate any meal. Plus, with its gluten-free option and vegetarian qualities, it's a versatile go-to for family gatherings or cozy weeknight dinners. So, if you're ready to take your taste buds on a seasonal adventure, let’s dive into this delicious recipe!

Why is Spaghetti Squash Casserole so special?

**Versatile **: This casserole is perfect for any occasion, serving as a wholesome main dish or a delightful side that everyone will enjoy.

Healthy Comfort: Packed with nutritious ingredients, this dish embraces the warm, cozy essence of comfort food without the guilt.

Flavor Explosion: The savory blend of sautéed mushrooms and tangy goat cheese creates a mouthwatering taste that’s sure to impress.

Easy to Prepare: With straightforward steps, even beginner cooks can whip this up without breaking a sweat.

Customizable: Feel free to experiment with seasonal veggies or different cheese varieties to make it your own and keep it exciting.

Ready to enhance your culinary repertoire? Dive into the comforting embrace of this Spaghetti Squash Casserole with Mushrooms & Goat Cheese and savor every bite!

Spaghetti Squash Casserole Ingredients

• Here’s what you’ll need for your Spaghetti Squash Casserole with Mushrooms & Goat Cheese.

For the Casserole

Spaghetti Squash – This is the star ingredient, providing a healthy, low-carb pasta alternative.
Olive Oil – Essential for sautéing, adding healthy fats and flavor. Substitute with avocado oil for a higher smoke point.
Cremini Mushrooms – Offers a delicious depth of flavor; you can use button mushrooms if needed.
Shallots – A milder alternative to onions that enhances the dish’s flavor profile. Use yellow onions for more intensity.
Garlic – A must for depth; avoid garlic powder for true authenticity.
Red Pepper Flakes – For a subtle kick; omit if you prefer a milder taste.
Fresh Baby Spinach – Adds color and nutrients; you could swap in kale for extra heartiness.
All-Purpose Flour – Thickens the creamy sauce; substitute with gluten-free flour for a gluten-free dish.
Chicken or Vegetable Broth – Infuses flavor; homemade stock works wonders here.
Milk – Creates creaminess; use unsweetened almond or cashew milk for a dairy-free option.
Kosher Salt & Black Pepper – Key seasonings to enhance the flavors; adjust to your taste.
Fresh Thyme – Infuses a fresh herbal note; use dried thyme but in lesser quantities.
Goat Cheese – Adds a creamy, tangy finish; cream cheese can be used for a milder profile.
Butter – Adds richness to your topping; substitute with olive oil or plant-based butter if preferred.
Panko Breadcrumbs – For that delightful crunch on top; use crushed gluten-free crackers for a gluten-free alternative.
Grated Parmesan Cheese – Completes the dish with its savory flavor; nutritional yeast is a fantastic vegan substitute.

Get ready to savor each bite of this incredible casserole, where health and comfort come together perfectly!

How to Make Spaghetti Squash Casserole

Prepare Squash: Preheat your oven to 375ºF (190ºC). Halve the spaghetti squash, scoop out the seeds, and generously coat the flesh with olive oil. Place the squash cut-side down on a lined baking sheet. Bake for 35-50 minutes, or until the flesh is tender enough to shred with a fork.
Shred Squash: After the squash has cooled for a few minutes, use a fork to pull out the tender strands and transfer them to a bowl. Set aside and let cool completely before mixing.
Cook Filling: In a large skillet, heat olive oil over medium-high heat. Add the cremini mushrooms and shallots, sautéing for about 6-7 minutes until they’re soft and slightly golden. Stir in the minced garlic, red pepper flakes, and spinach, cooking until the spinach has wilted, about 1-2 minutes.
Make Sauce: In the same skillet, whisk in the flour to create a roux, then gradually pour in chicken or vegetable broth and milk while stirring. Cook for 5-6 minutes, or until thickened. Season with kosher salt, black pepper, and fresh thyme, stirring in goat cheese until fully melted and creamy.
Combine: Gently toss the shredded squash with the prepared sauce, ensuring every strand is coated in that delicious mix.
Prepare Topping: In a cleaned pan, melt the butter over medium heat and toast the panko breadcrumbs until golden brown. Combine the breadcrumbs with grated Parmesan cheese and set aside.
Assemble & Bake: Grease a suitable baking dish with a little olive oil. Pour the spaghetti squash mixture into the dish, spreading it out evenly. Top with the breadcrumb and Parmesan mix, then bake uncovered for 25 minutes until bubbly and golden. Allow to cool for approximately 10 minutes before serving.

Optional: Add a sprinkle of fresh herbs or a squeeze of lemon juice before serving for an extra zing.

Exact quantities are listed in the recipe card below.

Make Ahead Options

These Low-Carb Spaghetti Squash Casserole with Mushrooms and Goat Cheese are perfect for meal prep enthusiasts! You can roast the spaghetti squash up to 3 days in advance and store it in an airtight container to maintain its freshness. Additionally, the filling can be prepared a day ahead—just sauté the mushrooms, shallots, and spinach, then make the sauce, allowing it to cool before refrigerating. When you're ready to serve, simply combine the shredded squash with the sauce and proceed to assemble with the breadcrumb topping before baking. This way, you save time on busy weeknights without sacrificing that delicious, comforting taste!

Tips for the Best Spaghetti Squash Casserole

Roast for Flavor: Sprinkle salt on the spaghetti squash before roasting to draw out moisture, enhancing its flavor and texture beautifully.
Prep Ahead: Roast the squash up to three days in advance, storing it in an airtight container to save time on busy weeknights.
Breadcrumb Perfection: Lightly toast the Panko breadcrumbs until golden to ensure they stay crunchy during baking; burned breadcrumbs can ruin the dish.
Mix It Up: Customize your Spaghetti Squash Casserole by adding seasonal vegetables or trying different cheese varieties to keep it exciting!
Watch the Bake Time: Keep an eye on the casserole while baking; if the top gets too brown, cover it with foil to prevent burning.

What to Serve with Spaghetti Squash Casserole with Mushrooms and Goat Cheese?

Creating the perfect meal around this comforting casserole is easier than you might think, especially with these delightful pairings.

Garlic Bread: The crunch and warmth of garlic bread pairs beautifully with the creamy casserole, offering a satisfying contrast in texture.
Mixed Green Salad: A light salad with a tangy vinaigrette can brighten your plate, adding freshness and balancing the rich flavors of the dish.
Roasted Vegetables: The natural sweetness of caramelized veggies complements the earthy notes of mushrooms, enhancing the overall meal experience. Toss in seasonal favorites like Brussels sprouts or carrots for extra flavor.
Quinoa Pilaf: This nutty grain dish can add protein to your meal while its earthiness enhances the mushroom flavors. Mix in herbs and nuts for a delightful crunch!
Sweet Potato Mash: The creamy texture of sweet potato mash with a hint of sweetness creates a lovely balance with the savory casserole.
Chardonnay or Sauvignon Blanc: A glass of chilled white wine can elevate your dining experience, enhancing the flavors of the goat cheese and mushrooms beautifully.
Apple Crisp: For dessert, a warm apple crisp offers a sweet, comforting finish that contrasts perfectly with the savory casserole, creating a delightful end to your meal.
Sparkling Water with Lemon: A refreshing drink choice that cleanses the palate, sparkling water adds a touch of elegance to your dining experience, highlighting the dish’s flavors.

Spaghetti Squash Casserole Variations

Feel free to brighten up your casserole experience with these delightful twists and substitutions!

Roasted Red Peppers: Add diced roasted red peppers for a hint of sweetness and colorful flair that complements the casserole beautifully.
Seasonal Veggies: Incorporate seasonal options like zucchini or roasted butternut squash for added nutrients and flavor depth. Let the freshness shine through!
Cheesy Combinations: Swap goat cheese for feta or ricotta to explore different flavor profiles; mix and match for a unique taste every time you make it.
Herb Enhancements: Experiment with basil or oregano instead of thyme for a savory twist; every herb brings a new aroma to the table.
Nutty Crunch: Incorporate chopped walnuts or pecans into the breadcrumb topping for a satisfying crunch; the added texture will surprise and delight!
Balsamic Drizzle: Finish with a balsamic reduction or glaze for a sweet and tangy contrast that beautifully elevates the dish.
Spicy Kick: Adjust the heat level by adding a pinch of cayenne pepper or using spicier red pepper flakes; perfect for those who enjoy a little extra zing!
Vegan Option: Substitute all dairy with plant-based alternatives like cashew cheese and almond milk, making it suitable for a vegan diet without sacrificing taste.

Storage Tips for Spaghetti Squash Casserole

Fridge: Store leftover Spaghetti Squash Casserole in an airtight container for up to 4 days. This keeps it fresh and ready for a delightful reheat!

Freezer: If you have extra casserole, freeze it in portions using freezer-safe containers. It can last for up to 3 months—perfect for convenient meals later on!

Reheating: For best results, reheat individual servings in the microwave for about 2-3 minutes. To warm the entire dish, preheat the oven to 350ºF and bake until heated through, about 15-20 minutes.

Thawing: When you're ready to enjoy frozen leftovers, thaw them in the fridge overnight before reheating for optimal texture and taste.

Spaghetti Squash Casserole with Mushrooms and Goat Cheese Recipe FAQs

How do I know if my spaghetti squash is ripe?
Absolutely! Look for spaghetti squash that feels heavy for its size and has a smooth, firm skin. It should be a uniform color with minimal blemishes. If you see dark spots or feel soft spots, it's best to choose another squash, as this indicates it may be overripe.

How should I store my Spaghetti Squash Casserole leftovers?
You can store leftovers in an airtight container in the refrigerator for up to 4 days. This keeps the flavors fresh for your next meal. Just make sure it's fully cooled before sealing to avoid condensation, which can lead to sogginess.

Can I freeze Spaghetti Squash Casserole?
Yes, you can! To freeze, let the casserole cool completely, then portion it into freezer-safe containers. It can last up to 3 months. When you're ready to enjoy it, simply thaw in the fridge overnight and reheat in the microwave or bake it at 350ºF until heated through.

What if my spaghetti squash is too watery after cooking?
Very! If you find your squash is too watery, use a clean kitchen towel to gently squeeze out excess moisture before adding it to the casserole mixture. This will help maintain a firm texture in your casserole and prevent it from becoming soggy while baking.

Are there any dietary considerations for this recipe?
Certainly! This Spaghetti Squash Casserole is vegetarian and can be made gluten-free by substituting all-purpose flour and Panko breadcrumbs with their gluten-free counterparts. For those with dairy allergies, using almond milk and skipping the goat cheese, or trying a vegan cheese alternative, ensures this dish fits a variety of diets.

How can I make the casserole ahead of time?
Absolutely! You can prepare the casserole a day in advance. Simply follow the recipe up to the baking step, cover it tightly with foil, and refrigerate. When you’re ready to bake, just pop it into the oven from the fridge and add an extra 5-10 minutes to the baking time. It’s a great way to enjoy homemade comfort food without the last-minute rush!