Stuffed Spaghetti Squash with Garlic Mushrooms & Spinach is not just a meal; it’s a delightful experience that blends comfort food and plant-based goodness into a cozy dish. This recipe is perfect for anyone seeking a nutritious yet satisfying meal that’s bursting with flavor. Imagine the warm, inviting aroma of roasted spaghetti squash, paired with savory garlic mushrooms and fresh spinach, all nestled together in a beautiful, edible bowl. With its vibrant colors and hearty ingredients, this dish not only looks appealing but also tastefully pleases the palate.
As the trend of plant-based eating continues to grow, dishes like Stuffed Spaghetti Squash with Garlic Mushrooms & Spinach stand out for their simplicity and wholesome benefits. Packed with vitamins and nutrients, it’s a fantastic option for health-conscious eaters and anyone looking to incorporate more vegetables into their diet. Perfect for a weeknight dinner or as an elegant addition to your next gathering, this recipe is versatile enough to suit any occasion. Furthermore, it’s quite easy to make, making it an excellent choice for both novice cooks and experienced chefs alike.
Why You’ll Love This Stuffed Spaghetti Squash
- Flavorful Filling: The mix of garlic mushrooms and fresh spinach, drizzled in marinara sauce, offers a rich flavor profile that is hard to resist.
- Nutritious: This dish is packed with essential vitamins and minerals from the vegetables and offers a healthy dose of fiber.
- Visual Appeal: Serving your meal in the squash halves creates a stunning presentation.
- Easy to Prepare: The recipe requires minimal prep time and equipment, making it a great choice for busy weeknights.
- Customizable: You can easily modify the filling to suit your tastes by adding different vegetables or proteins.
Preparation Phase & Tools to Use
Before you get started with making your Stuffed Spaghetti Squash, it’s essential to prepare your kitchen and gather the necessary tools for a smooth cooking experience. Begin by preheating your oven to 400°F (200°C), as this will ensure your squash roasts perfectly. A heavy-duty baking sheet is crucial for holding your squash, so make sure to use one that can withstand high temperatures.
For chopping and dicing, a sharp chef’s knife will make slicing through the spaghetti squash and vegetables easier, while a cutting board provides a safe space for your prep work. A large skillet will be needed for sautéing the mushrooms, garlic, and spinach. If you have it, a spoon or spatula will come in handy for stirring the filling. Lastly, prepping your workspace by cleaning and organizing your ingredients makes the cooking process more enjoyable—after all, a tidy kitchen leads to a tidy mind!

Ingredients
- 1 medium spaghetti squash
- 1 Tbsp olive oil
- Salt and black pepper, to taste
- 2 Tbsp olive oil
- 2–3 garlic cloves, minced
- 1 small onion, diced
- 2 cups mushrooms, sliced
- 2 cups fresh spinach
- 1 cup marinara or tomato sauce
- 1 tsp Italian seasoning
- ½ tsp chili flakes (optional)
- Salt and pepper, to taste
- Fresh parsley or basil (optional garnish)
- Nutritional yeast or vegan parmesan (optional garnish)
Instructions
Step 1: Roast the Squash
To kick off this recipe, roast the spaghetti squash for maximum flavor and tenderness. Begin by preheating your oven. Cut the squash in half lengthwise and carefully scoop out the seeds. Brush the cut sides with olive oil and season them generously with salt and black pepper—these steps enhance the squash’s natural sweetness. Place the squash cut-side down on the baking sheet and allow it to roast for about 35 to 40 minutes, until soft. Once cooked, take a fork and gently fluff the strands inside each half to create that recognizable spaghetti texture.
Step 2: Make the Flavorful Filling
While the squash is in the oven, heat the olive oil in a large skillet over medium heat. Start by adding the minced garlic and diced onion to the skillet, cooking until they are soft and fragrant. This base will deepen the overall flavor of your dish. Next, bring in the sliced mushrooms; sauté them until they become golden brown. This process takes about 5 to 7 minutes, which allows them to release their natural juices and enhance their flavor profile. Immediately add the fresh spinach, cooking just until wilted, about 2 days. Reduce the heat and incorporate the marinara or tomato sauce, Italian seasoning, and optional chili flakes to bring a touch of heat. Let the mixture simmer for 5 minutes, allowing all the ingredients to meld beautifully.
Step 3: Assemble the Dish
Now, it’s time to bring everything together. Carefully take the roasted squash halves and fluff the spaghetti-like strands with a fork. Spoon the warm, savory filling generously into each half, ensuring that you distribute the filling evenly for the best flavors. If desired, finish with a sprinkle of fresh herbs like parsley or basil for a burst of color and flavor. For those who enjoy an extra cheesy touch, a sprinkling of nutritional yeast or vegan parmesan makes a wonderful garnish.

Variations
- Protein: Add cooked quinoa, lentils, or chickpeas to the filling for extra protein.
- Vegetables: To mix things up, try adding bell peppers, zucchini, or kale for added nutrition.
- Spices: Experiment with different spices like cumin, smoked paprika, or even a hint of lemon for a unique twist.
Cooking Notes
- Make sure to clean the spaghetti squash properly before cutting it to remove any dirt or residues.
- When sautéing, don’t overcrowd the skillet; cook in batches if needed for best results.
- If you prefer a more robust flavor, let the filling simmer slightly longer.
- Should you have leftovers, they store well in an airtight container in the refrigerator for up to 3 days.
Serving Suggestions
- Pair your stuffed spaghetti squash with a side salad for a refreshing contrast to the warm dish.
- A loaf of crusty bread or garlic bread complements the meal nicely and adds a wonderful crunch.
Tips
- To check for doneness, pierce the squash with a fork; it should easily split apart when fully cooked.
- For a spicier version, increase the amount of chili flakes or serve with sriracha on the side.
- Experiment with different types of mushroom varieties, such as shiitake or portobello, for diverse flavors.
Prep Time, Cook Time, Total Time
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Total Time: 55 minutes
Nutritional Information
- Calories: Approximately 250 per serving
- Protein: 6g
- Sodium: 320mg
FAQs
Can I prepare the filling in advance?
Absolutely! You can prepare the filling a day in advance and store it in the fridge. Just reheat before adding it to the roasted spaghetti squash.
Is this dish suitable for meal prep?
Yes, stuffed spaghetti squash makes for excellent meal prep. You can portion it out into individual servings and refrigerate or freeze for later enjoyment.
Can I use a different sauce other than marinara?
Certainly! Feel free to use pesto, alfredo, or your favorite homemade sauce for a different flavor profile.
Is there a way to make this dish gluten-free?
This recipe is naturally gluten-free, just ensure any sauces you use are confirmed gluten-free as well.
Conclusion
In conclusion, Stuffed Spaghetti Squash with Garlic Mushrooms & Spinach is a wholesome, delicious choice that guarantees satisfaction with every bite. Its easy preparation, combined with rich flavors and stunning presentation, makes it a dish worthy of any dinner table. Whether you’re a devoted vegetarian or simply looking to add more plant-based options to your meals, this recipe is not only nutritious but also a delight to share with family and friends. Don’t hesitate to experiment with variations or share your unique twists on this classic dish in the comments below. Happy cooking!
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Stuffed Spaghetti Squash with Garlic Mushrooms & Spinach
- Total Time: 55 minutes
- Yield: 4 servings 1x
Description
Stuffed Spaghetti Squash with Garlic Mushrooms & Spinach is a wholesome, delicious choice that guarantees satisfaction with every bite.
Ingredients
- 1 medium spaghetti squash
- 1 Tbsp olive oil
- Salt and black pepper, to taste
- 2 Tbsp olive oil
- 2–3 garlic cloves, minced
- 1 small onion, diced
- 2 cups mushrooms, sliced
- 2 cups fresh spinach
- 1 cup marinara or tomato sauce
- 1 tsp Italian seasoning
- ½ tsp chili flakes (optional)
- Salt and pepper, to taste
- Fresh parsley or basil (optional garnish)
- Nutritional yeast or vegan parmesan (optional garnish)
Instructions
- Roast the Spaghetti Squash: To kick off this recipe, roast the spaghetti squash for maximum flavor and tenderness. Begin by preheating your oven. Cut the squash in half lengthwise and carefully scoop out the seeds. Brush the cut sides with olive oil and season them generously with salt and black pepper—these steps enhance the squash’s natural sweetness. Place the squash cut-side down on the baking sheet and allow it to roast for about 35 to 40 minutes, until soft. Once cooked, take a fork and gently fluff the strands inside each half to create that recognizable spaghetti texture.
- Make the Flavorful Filling: While the squash is in the oven, heat the olive oil in a large skillet over medium heat. Start by adding the minced garlic and diced onion to the skillet, cooking until they are soft and fragrant. This base will deepen the overall flavor of your dish. Next, bring in the sliced mushrooms; sauté them until they become golden brown. This process takes about 5 to 7 minutes, which allows them to release their natural juices and enhance their flavor profile. Immediately add the fresh spinach, cooking just until wilted, about 2 days. Reduce the heat and incorporate the marinara or tomato sauce, Italian seasoning, and optional chili flakes to bring a touch of heat. Let the mixture simmer for 5 minutes, allowing all the ingredients to meld beautifully.
- Assemble the Dish: Now, it’s time to bring everything together. Carefully take the roasted squash halves and fluff the spaghetti-like strands with a fork. Spoon the warm, savory filling generously into each half, ensuring that you distribute the filling evenly for the best flavors. If desired, finish with a sprinkle of fresh herbs like parsley or basil for a burst of color and flavor. For those who enjoy an extra cheesy touch, a sprinkling of nutritional yeast or vegan parmesan makes a wonderful garnish.
Notes
Make sure to clean the spaghetti squash properly before cutting it to remove any dirt or residues. When sautéing, don’t overcrowd the skillet; cook in batches if needed for best results. If you prefer a more robust flavor, let the filling simmer slightly longer. Should you have leftovers, they store well in an airtight container in the refrigerator for up to 3 days.
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Category: Dinner
Nutrition
- Calories: 250 kcal
- Sodium: 320 mg
- Protein: 6 g