Jump to Recipe Print RecipeAs I walked through the vibrant autumn market, the sight of plump acorn squashes caught my eye and set my creative culinary gears turning. It was the perfect inspiration for my Hearty Mushroom and Quinoa Stuffed Acorn Squash, a dish wonderfully suited for cozy dinner gatherings or a nourishing weeknight meal. Packed with nutritious quinoa, rich mushrooms, and delightful seasonings, this vegetarian delight not only showcases the natural sweetness of the squash but also offers a wonderful balance of textures and flavors. Plus, it’s gluten-free and makes for a stunning centerpiece on your holiday table! Are you ready to whip up this scrumptious dish that will impress even the pickiest eaters? Why is Mushroom Quinoa Stuffed Acorn Squash a Must-Try? Hearty and Nutritious: This dish combines nutrient-rich quinoa and earthy mushrooms, creating a filling meal that doesn’t compromise on taste. Visual Appeal: The burst of colors from the acorn squash and pomegranate arils makes it a stunning centerpiece for any gathering. Flexible and Adaptable: Easily swap in your favorite grains, or enhance the filling with nuts for an extra crunch, making it uniquely yours! Health-Conscious: Packed with fiber and low in calories, this recipe is perfect for those looking to eat well without sacrificing flavor. Quick Preparation: In about an hour, you can whip up this flavorful dish, perfect for both busy weeknights and special occasions. For more comforting vegetarian recipes, check out my Ground Turkey Stuffed Peppers or Squash Casserole Delightful options! Mushroom and Quinoa Stuffed Acorn Squash Ingredients Discover the delicious components that come together in this wholesome dish! For the Acorn Squash • Acorn Squash – Serves as the beautiful, sweet vessel for the filling; medium-sized squashes give even cooking. • Extra-Virgin Olive Oil – Adds a light, healthy richness; you can also use melted butter for a more indulgent flavor. • Kosher Salt – Essential for bringing all the flavors to life; adjust to your personal taste preferences. For the Filling • Baby Bella Mushrooms – Their umami flavor and meaty texture are perfect for making the filling satisfying; feel free to substitute with cremini or shiitake. • Finely Chopped Shallots – Provide a mild sweetness and aromatic depth; yellow onion works well if shallots aren’t available. • Garlic – Enhances flavor with its aromatic essence; fresh minced garlic is ideal, but jarred can work in a rush. • Thyme Sprigs – Infuse herbal notes; dried thyme (1 tsp) can replace fresh if necessary. • Dry Quinoa – The star protein and binder of the filling; rinse it before cooking to remove saponins for a cleaner taste. • Vegetable Broth – Adds robust flavor to the quinoa; chicken broth is an option for those who aren’t vegetarian. • Whole Milk – Adds creaminess to the mix; for a dairy-free version, unsweetened cashew or almond milk is a great alternative. • Black Pepper – Balances the dish with a hint of spice; freshly ground brings out the best flavor. • Grated Parmesan Cheese – Provides savory richness and golden crust; for a vegan option, use nutritional yeast. For the Finishing Touch • Balsamic Glaze – A sweet-tangy drizzle that elevates the whole dish; homemade can be made by reducing balsamic vinegar with brown sugar. • Pomegranate Arils – An optional garnish that adds vibrant color and a burst of tartness, making the dish even more enticing. Get ready to enjoy this mesmerizing Mushroom and Quinoa Stuffed Acorn Squash that’s bursting with flavors, colors, and nutrition! Step‑by‑Step Instructions for Mushroom and Quinoa Stuffed Acorn Squash Step 1: Preheat and Prepare Preheat your oven to 425°F (218°C) and line a large baking sheet with parchment paper or aluminum foil for easy cleanup. While the oven warms, take your medium-sized acorn squashes and carefully halve them lengthwise. Use a spoon to scoop out the seeds, creating a lovely bowl to hold the delicious filling. Step 2: Roast the Squash Brush the cut sides of the acorn squash halves with 2 tablespoons of extra-virgin olive oil, then sprinkle with ½ teaspoon of kosher salt. Place the squash cut-side down on the prepared baking sheet and roast them in the preheated oven for about 30 minutes. They should be tender and golden when ready, invitingly sweet and caramelized. Step 3: Sauté the Filling While the squash roasts, heat the remaining 1 tablespoon of olive oil in a large skillet over medium-high heat. Add the finely chopped baby bella mushrooms and shallots, sautéing them for 6-8 minutes until they soften and become fragrant. The mushrooms will release their moisture and develop a rich color, creating a base of savory flavor for your Mushroom and Quinoa Stuffed Acorn Squash. Step 4: Add Garlic and Toast Quinoa Stir in the minced garlic and cook for an additional minute, allowing the aroma to fill your kitchen. Next, add the rinsed dry quinoa to the skillet, toasting it for about 1-2 minutes, stirring frequently. This step enhances the nutty flavor of the quinoa, making the filling even more delectable. Step 5: Cook the Quinoa Mixture Pour in the vegetable broth and whole milk along with the remaining salt and thyme sprigs. Bring the mixture to a gentle simmer, then cover and reduce the heat to low. Cook this fragrant filling for 17-20 minutes until the quinoa has absorbed the liquid completely; remove the thyme sprigs to avoid overpowering the dish. The filling should have a fluffy texture, ready to be combined with the squash. Step 6: Mix in Cheese and Stuff the Squash Stir in 3 tablespoons of grated Parmesan cheese into the quinoa mixture until melted and creamy. Now it’s time to fill each roasted acorn squash half with this enticing mixture, packing it generously, and topping them with the remaining Parmesan cheese. Each scoop should overflow, ensuring every bite of your Mushroom and Quinoa Stuffed Acorn Squash is a delight. Step 7: Final Roast for Golden Finish Return the stuffed squash halves to the oven and bake for an additional 10-15 minutes. Keep an eye on them; they should be perfectly golden brown on top, bubbling slightly with deliciousness. The Parmesan will create a delightful crust that brings everything together beautifully. Step 8: Drizzle and Garnish Once baked, remove the acorn squash from the oven and drizzle with balsamic glaze for a sweet-tangy finish that perfectly complements the flavors. For an added burst of color and tartness, sprinkle pomegranate arils over the top before serving. Your Mushroom and Quinoa Stuffed Acorn Squash is ready to impress! What to Serve with Mushroom and Quinoa Stuffed Acorn Squash Pairing your dish with delightful sides and beverages can elevate your meal to new heights. Picture a table filled with textures and flavors that balance perfectly with the warmth of your delicious squash. Fresh Green Salad: A crisp, vibrant salad with mixed greens and light vinaigrette adds a refreshing crunch that complements the savory filling wonderfully. Garlic Bread: This buttery, toasty side brings a comforting warmth, perfect for scooping up every last bit of the exquisite stuffing. Cranberry Sauce: A sweet and tangy cranberry sauce brings a burst of autumn flavor that enhances the natural sweetness of the acorn squash. Roasted Vegetables: Mix seasonal vegetables like Brussels sprouts and carrots drizzled with olive oil for a warm, hearty side that pairs beautifully. Herbed Couscous: Fluffy, aromatic couscous seasoned with fresh herbs offers a lovely texture that matches well with the stuffed squash, adding a delightful chew. Sparkling Water with Citrus: Elevate your dining experience with refreshing sparkling water infused with lemon or lime for a zesty contrast to the rich filling. Imagine the flavors dancing together as you savor each bite—your Mushroom and Quinoa Stuffed Acorn Squash deserves the spotlight and the perfect companions! Make Ahead Options These Mushroom and Quinoa Stuffed Acorn Squash are perfect for meal prep enthusiasts! You can prepare the filling up to 3 days in advance; just store it in an airtight container in the refrigerator to maintain its flavor and texture. Roast the acorn squash halves and keep them in the fridge for up to 24 hours as well, wrapped tightly to avoid drying out. When ready to serve, simply fill each squash with the prepped filling, top with cheese, and pop them in the oven at 425°F (218°C) for about 10-15 minutes until golden and bubbly. This way, you’ll have a delicious, stress-free meal ready with minimal effort. Storage Tips for Mushroom and Quinoa Stuffed Acorn Squash Fridge: Wrap the stuffed acorn halves tightly in plastic wrap or place them in an airtight container; they can be refrigerated for up to 4 days. Freezer: For longer storage, freeze the stuffed acorn squash in a freezer-safe container; they will maintain their flavor for up to 3 months. Be sure to let them cool completely before freezing. Reheating: When ready to enjoy, thaw in the fridge overnight, then warm in a baking dish with a splash of water at 350°F (175°C) for about 15-20 minutes until heated through. Serving: If reheating from frozen, add an extra 5-10 minutes to the baking time to ensure the Mushroom and Quinoa Stuffed Acorn Squash is piping hot in the center. Mushroom and Quinoa Stuffed Acorn Squash Variations Feel free to explore these delightful twists and accommodations for the delicious Mushroom and Quinoa Stuffed Acorn Squash! Gluten-Free: Use certified gluten-free grains like brown rice or quinoa to easily keep this dish gluten-free for any gathering. Nutty Delight: Add toasted pine nuts or walnuts for additional crunch and flavor. The earthy, nutty notes truly elevate the dish! Herbal Infusion: Swap out thyme for fresh sage or rosemary for a delightful herbal twist. Each will lend a unique flavor profile that shines in the filling. Cheesy Alternatives: Opt for vegan cheese or nutritional yeast instead of Parmesan for a dairy-free option that doesn’t skimp on flavor. Adding these alternatives contributes to the dish’s delicious depth. Extra Spice: For those who love a kick, consider stirring in some red pepper flakes or diced jalapeños to amp up the heat. This fiery addition will tantalize your taste buds! Seasonal Swap: Take advantage of seasonal vegetables by adding in roasted sweet potatoes or sautéed spinach to the filling for extra nutrients and vibrant color. Savory Variants: Substitute mushrooms with cooked lentils for a hearty filling rich in protein. This variation adds a delightful textural difference while keeping the dish wholesome. For more heartwarming vegetarian creations, don’t miss trying my Chicken Dumplings Cozy or a comforting Hamburger Mac Cheese for loved ones! Tips for the Best Mushroom and Quinoa Stuffed Acorn Squash Check for Doneness: Always test the acorn squash for tenderness by piercing it with a fork; it should glide in easily when fully roasted. Rinse Quinoa: Don’t skip rinsing your quinoa to remove natural saponins, which can make it taste bitter; this step ensures a delightful filling. Adjust Seasoning: Taste your filling before stuffing the squash and adjust salt and pepper as needed; it’s key for a well-balanced Mushroom and Quinoa Stuffed Acorn Squash. Avoid Sogginess: If making ahead, store the filling separately from the squash to keep it fluffy and prevent excess moisture. Golden Crust Tip: For a beautifully golden top, consider broiling the stuffed squash for the last couple of minutes, but watch closely to avoid burning. Flavorful Add-Ins: Enhance your filling by adding nuts or herbs for extra texture and flavor; it makes your dish even more special! Mushroom and Quinoa Stuffed Acorn Squash Recipe FAQs How do I select the best acorn squash? When choosing acorn squash, look for those that feel heavy for their size and have a hard, smooth skin. Avoid any with dark spots or soft spots as these can indicate overripeness. A good acorn squash should have a bright green color, sometimes with patches of orange or yellow. You want the squash firm to the touch, which will ensure a sweet and tender result. How should I store leftover stuffed acorn squash? To keep your Mushroom and Quinoa Stuffed Acorn Squash fresh, wrap the stuffed halves in plastic wrap or place them in an airtight container. They can be stored in the refrigerator for up to 4 days. Be sure to allow the squash to cool completely before storing to maintain optimal texture and flavor. Can I freeze stuffed acorn squash, and how? Absolutely! To freeze your Mushroom and Quinoa Stuffed Acorn Squash, allow them to cool completely first. Then, place each stuffed half into freezer-safe containers or heavy-duty freezer bags. They will stay fresh for up to 3 months. When ready to eat, thaw them in the refrigerator overnight, and reheat in a baking dish with a splash of water at 350°F (175°C) for about 15-20 minutes, adding an extra 5-10 minutes if reheating from frozen. What should I do if my quinoa isn’t fluffy? If your quinoa turns out gummy or dense, it’s likely due to not rinsing it before cooking or using too much liquid. To resolve this, ensure to rinse your quinoa thoroughly under cold water before cooking to remove any bitter saponins. For fluffy quinoa, use a ratio of 2 parts liquid to 1 part quinoa, and once cooked, let it sit covered for 5 minutes before fluffing it with a fork. This allows excess steam to release and makes for a light and fluffy filling in your acorn squash. Are there any allergies I should consider for this recipe? Yes, the Mushroom and Quinoa Stuffed Acorn Squash contains dairy due to the Parmesan cheese and whole milk, which may not be suitable for those with lactose intolerance or a dairy allergy. To make it dairy-free, simply substitute these ingredients with unsweetened cashew milk and nutritional yeast instead of Parmesan. Always double-check all ingredient labels for potential allergens, especially if you are serving guests with specific dietary needs. What types of substitutions can I make for the filling? You can easily customize your filling! If you’re looking to change the texture, try substituting quinoa with farro or brown rice. For added crunch, incorporate nuts like toasted pine nuts or walnuts. You can also experiment with other mushrooms, like cremini or shiitake, for varying flavors. Don’t hesitate to add in other vegetables like spinach or kale to boost the nutritional value and color of your dish. The more the merrier! Mushroom and Quinoa Stuffed Acorn Squash: Flavorful Comfort! Delight in this Mushroom and Quinoa Stuffed Acorn Squash, a nutritious and visually appealing dish perfect for any gathering. Print Recipe Pin Recipe Prep Time 15 minutes minsCook Time 45 minutes minsTotal Time 1 hour hr Servings: 4 squash halvesCourse: DinnerCuisine: VegetarianCalories: 320 Ingredients Equipment Method Nutrition Notes Ingredients 1x2x3x? For the Acorn Squash2 medium Acorn Squash Serves as the vessel for the filling.2 tablespoons Extra-Virgin Olive Oil Can substitute with melted butter.0.5 teaspoon Kosher Salt Adjust to taste.For the Filling8 ounces Baby Bella Mushrooms Substitute with cremini or shiitake if desired.3 tablespoons Finely Chopped Shallots Yellow onion can be used as an alternative.3 cloves Garlic Fresh minced garlic is ideal.3 Thyme Sprigs Dried thyme (1 tsp) can suffice.1 cup Dry Quinoa Rinse before cooking.2 cups Vegetable Broth Chicken broth can be used for non-vegetarians.0.5 cup Whole Milk Substitute with unsweetened cashew or almond milk for dairy-free.0.5 teaspoon Black Pepper Use freshly ground for best flavor.3 tablespoons Grated Parmesan Cheese Use nutritional yeast for vegan.For the Finishing Touch2 tablespoons Balsamic Glaze Homemade can be made by reducing balsamic vinegar.0.5 cup Pomegranate Arils Optional garnish. Equipment Large Baking Sheetlarge skilletParchment paper Method InstructionsPreheat your oven to 425°F (218°C) and line a large baking sheet with parchment paper or aluminum foil. Halve the acorn squashes lengthwise and scoop out the seeds.Brush the cut sides of the squash with 2 tablespoons of olive oil and sprinkle with ½ teaspoon of kosher salt. Place cut-side down on the baking sheet and roast for about 30 minutes.In a large skillet, heat the remaining 1 tablespoon of olive oil over medium-high heat. Add the mushrooms and shallots, sautéing for 6-8 minutes.Stir in minced garlic and cook for 1 additional minute. Toast the rinsed quinoa in the skillet for 1-2 minutes, stirring frequently.Pour in the vegetable broth and milk, add the remaining salt and thyme, bring to a simmer, cover, and cook for 17-20 minutes.Stir in 3 tablespoons of Parmesan cheese until melted. Fill each roasted squash half generously with the quinoa mixture.Return the stuffed squash to the oven and bake for an additional 10-15 minutes until golden brown.Remove from oven, drizzle with balsamic glaze, and sprinkle with pomegranate arils before serving. Nutrition Serving: 1squash halfCalories: 320kcalCarbohydrates: 42gProtein: 10gFat: 14gSaturated Fat: 3gPolyunsaturated Fat: 1gMonounsaturated Fat: 10gCholesterol: 10mgSodium: 410mgPotassium: 800mgFiber: 7gSugar: 4gVitamin A: 150IUVitamin C: 18mgCalcium: 100mgIron: 2mg NotesTips: Rinse quinoa to remove bitterness, adjust seasoning as needed, and store filling separately to prevent sogginess if making ahead. Tried this recipe?Let us know how it was!