If you have a soft spot for comforting classics with a fresh twist, then you’re going to absolutely adore this Creamy Green Bean Casserole with Mushrooms and Parmesan Recipe. It takes the nostalgic green bean casserole you remember but elevates it with fragrant sautéed mushrooms, a luscious creamy sauce, and a crisp, cheesy Parmesan topping that brings everything together with a beautiful golden crust. Whether it’s a holiday centerpiece or an easy weeknight favorite, this recipe delivers heartwarming flavors and textures that feel like a warm hug in every bite.
Ingredients You’ll Need
These ingredients are wonderfully straightforward but work in harmony to create layers of flavor and texture, making your casserole both creamy and crunchy, savory and fresh. Each one plays a key role—from the tender green beans to the rich cream and earthy mushrooms, finishing with the nutty, sharp Parmesan that makes this dish unforgettable.
- Green beans, 1 pound: Fresh and crisp, they provide the vibrant green color and just the right amount of bite after blanching.
- Unsalted butter, 1 tablespoon: Adds a silky richness when cooking the mushrooms and onions, enhancing their flavor.
- Olive oil, 1 tablespoon: Helps gently sauté ingredients without overpowering the dish.
- Mushrooms, 8 ounces sliced: Choose cremini, baby bella, or white mushrooms for an earthy, umami depth that contrasts beautifully with the green beans.
- Onion, 1 medium chopped: Brings sweetness and soft texture as it cooks down.
- Garlic, 2 cloves minced: The subtle punch of garlic elevates the creamy sauce with aromatic warmth.
- All-purpose flour, 2 tablespoons: Essential for thickening the béchamel-style sauce to the perfect creamy consistency.
- Chicken or vegetable broth, 1/2 cup: Adds savory body and depth to the sauce base.
- Heavy whipping cream, 1 cup: The star of the creamy sauce, giving it lusciousness and richness.
- Worcestershire sauce, 1 tablespoon: A secret weapon to boost umami and add complexity.
- Soy sauce, 1 tablespoon: Enhances the savory notes and balances the creaminess.
- Salt and black pepper, to taste: Seasoning is key to highlight all the flavors perfectly.
- Breadcrumbs, 1/2 cup: Provides a golden, crunchy topping that contrasts with the creamy interior.
- Parmesan cheese, 1/3 cup grated: Nutty and sharp, this cheese is what makes the crust irresistibly flavorful.
- Garlic powder or garlic flakes, 1/4 teaspoon powder or 1 teaspoon flakes: Adds an extra garlicky kick in the breadcrumb topping.
- Dried parsley, 1 teaspoon: Brings a fresh herbal note and pretty specks of green to the crust.
How to Make Creamy Green Bean Casserole with Mushrooms and Parmesan Recipe
Step 1: Prepare the Green Beans
Start by preheating your oven to 375°F (190°C). Blanch the trimmed green beans in boiling salted water for about 5 to 8 minutes until they are tender yet still crisp. This step ensures the beans stay bright green and don’t overcook in the oven later. Once blanched, drain them well and set aside to cool slightly.
Step 2: Sauté Mushrooms and Aromatics
Heat the butter and olive oil in a large skillet over medium-high heat until shimmering. Add the sliced mushrooms and cook them until they’re beautifully golden brown, letting their natural earthy flavors intensify. Then add the chopped onion and cook until soft and translucent. Stir in the minced garlic last so it doesn’t burn, releasing its fragrant aroma.
Step 3: Make the Creamy Sauce
Sprinkle the flour evenly over the mushroom mixture and cook for 1 to 2 minutes, stirring constantly to avoid lumps and develop a slight toasty flavor. Gradually whisk in the chicken or vegetable broth, bringing the mixture to a gentle boil. Lower the heat and stir in the heavy cream, Worcestershire sauce, and soy sauce. Let this simmer until it thickens to a smooth, velvety sauce. Season generously with salt and black pepper, taste-testing as you go to get just the right balance.
Step 4: Combine and Bake
Gently fold the blanched green beans into the creamy mushroom sauce, making sure each bean is luxuriously coated. Transfer this mixture to a casserole dish, spreading it evenly. In a small bowl, mix together the breadcrumbs, Parmesan cheese, garlic powder, and dried parsley. Sprinkle this mixture evenly over the top, creating a lovely crunchy topping. Bake in the oven for 20 minutes until bubbly and hot, then switch to broil for the last 2 to 3 minutes to achieve a gorgeous golden-brown crust that crackles when you dig in.
How to Serve Creamy Green Bean Casserole with Mushrooms and Parmesan Recipe
Garnishes
To make your casserole truly shine at the table, consider adding some fresh garnishes. A sprinkle of fresh chopped parsley or chives adds a fresh burst of color and flavor that complements the richness, while a few shaved Parmesan curls make each serving look elegant and inviting.
Side Dishes
This creamy green bean casserole pairs wonderfully with roasted turkey or chicken for holiday meals, but it also stands on its own alongside garlic mashed potatoes or fluffy rice for a cozy weeknight dinner. The luscious texture and savory crust make it a perfect match for anything from simple grilled meats to festive spreads.
Creative Ways to Present
If you want to impress your guests, try serving this casserole in individual ramekins or in mini cast-iron skillets. Not only does it make portion control easy, it also adds a charming, personal touch to your presentation. For a fun twist, layer the casserole in clear glass dishes so guests can admire the creamy sauce and golden topping before digging in.
Make Ahead and Storage
Storing Leftovers
After enjoying your meal, simply cover any leftovers tightly with plastic wrap or transfer them to an airtight container. Store in the refrigerator for up to 3 days. The flavors actually deepen as it sits, but be sure to reheat gently because the sauce can thicken and the topping soften.
Freezing
This casserole freezes well if you want to prepare it in advance. Assemble the casserole but hold off on baking and adding the breadcrumb topping. Wrap it tightly in plastic wrap followed by aluminum foil to prevent freezer burn. It will keep for up to 2 months. When ready to enjoy, thaw overnight in the refrigerator before topping and baking.
Reheating
To bring your creamy green bean casserole back to life, reheat it in a preheated oven at 350°F (175°C) for 15 to 20 minutes until warmed through. For a crispier topping, you can broil it for the last few minutes, watching carefully to avoid burning. Avoid microwaving to maintain the best texture.
FAQs
Can I use frozen green beans instead of fresh?
Absolutely! Frozen green beans work great in this recipe. Just thaw and drain them well before blanching or adding to the sauce, as this helps keep the casserole from becoming too watery.
Is there a vegetarian version of this casserole?
Yes! Simply swap the chicken broth for vegetable broth and make sure your Worcestershire sauce is vegetarian-friendly. The rich, creamy mushroom sauce still delivers plenty of savory umami flavors.
What mushrooms are best for this recipe?
Cremini, baby bella, or white button mushrooms all work wonderfully. They each bring a mild earthiness and absorb the flavors of the sauce beautifully. You can even mix different types for more depth.
Can I make this casserole dairy-free?
While the recipe relies on cream and Parmesan for that luscious texture and flavor, you can substitute coconut cream or a cashew-based cream alternative and a dairy-free cheese to make it suitable for a dairy-free diet.
How do I get a crunchy topping instead of soggy?
Using fresh breadcrumbs mixed with Parmesan and garlic powder, then broiling the casserole at the very end helps achieve that perfect golden crunch. Also, avoid covering the casserole during baking to keep the topping crisp.
Final Thoughts
There’s something truly comforting about a casserole that combines classic flavors with a fresh, rich twist, and this Creamy Green Bean Casserole with Mushrooms and Parmesan Recipe hits every note perfectly. It’s elegant enough for special occasions yet easy enough for a weeknight meal. Once you try it, you’ll wonder how you ever enjoyed green bean casserole any other way. So go ahead, gather your ingredients, and treat yourself and your loved ones to this incredible dish—you won’t regret it!
