Savory Green Bean and Mushroom Casserole

Name: Savory Green Bean and Mushroom Casserole
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Yield: 6 servings
Ingredients: 1 lb fresh green beans, trimmed; 8 oz cremini mushrooms, sliced; 2 tbsp unsalted butter; 1 medium onion, finely chopped; 2 cloves garlic, minced; 2 tbsp all-purpose flour; 1 cup vegetable broth; 1 cup heavy cream; 1 tsp dried thyme; 1 tsp dried oregano; 1/2 cup grated Parmesan cheese; 1 cup crispy fried onions; Salt and pepper to taste

🕒 Prep: 15 min

🔥 Cook: 25 min

🍽 Serves: 6

★★★★★

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This Savory Green Bean and Mushroom Casserole is a perfect blend of comforting, creamy sauce and crisp, fresh vegetables. Whether it’s for a holiday feast or a weeknight dinner, this dish is sure to become a favorite on your table.

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Ingredients for Savory Green Bean and Mushroom Casserole

Green beans are the star here, providing a crisp, fresh texture to balance the rich sauce. Cremini mushrooms add an earthy depth that pairs beautifully with the beans. Butter is essential for sautéing, lending richness to the base of the dish. Onion and garlic infuse the sauce with aromatic warmth, while flour helps thicken it to the perfect consistency. Vegetable broth and heavy cream create a luscious, creamy sauce, enhanced by dried thyme and oregano for a hint of herbal flavor. Parmesan cheese adds a nutty, savory finish, and crispy fried onions provide a crunchy, flavorful topping. Season with salt and pepper to taste, to bring all the flavors together.

Tips & Tricks

Blanching the green beans before baking ensures they stay crisp and vibrant.
For an extra depth of flavor, try using a mix of mushroom varieties.
Make sure to whisk the sauce well to avoid any lumps from the flour.

Serving Suggestions

This casserole pairs beautifully with roasted chicken or turkey, making it a fantastic side dish for a holiday spread. It’s also delicious alongside a simple green salad for a lighter meal.

Frequently Asked Questions

Can I use frozen green beans?: Yes, you can. Just make sure to thaw them completely and pat them dry to avoid excess water in the dish.
How can I make this dish vegetarian-friendly?: It already is! Just ensure your vegetable broth is truly vegetarian.
What can I use instead of crispy fried onions?: Try using homemade croutons or toasted breadcrumbs for a crunchy top layer.

Savory Green Bean and Mushroom Casserole Recipe Walkthrough

First things first, preheat your oven to 375°F (190°C). While it’s heating up, bring a large pot of salted water to a boil. Toss in the green beans and let them blanch for about four minutes. You want them bright green and tender-crisp. Drain them well and set aside for later.

Next, grab a large skillet and melt the butter over medium heat. Add your mushrooms, onions, and garlic. Sauté them until the mushrooms turn a lovely golden brown and the onions become translucent, which should take about 5-7 minutes. Stir in the flour, letting it cook for just a minute before gradually whisking in the vegetable broth and heavy cream. Add the thyme and oregano, bringing it all to a gentle simmer. Let it cook until the sauce thickens, which should take another 3-5 minutes. You’re looking for a nicely thickened sauce here.

Once the sauce is ready, remove it from the heat and stir in half of the Parmesan cheese. Give it a taste and season with salt and pepper as needed. Combine your blanched green beans with this delicious mushroom sauce in a large baking dish. Sprinkle the remaining Parmesan cheese and crispy fried onions over the top.

Pop the dish into your preheated oven and bake it for 20-25 minutes. You’ll know it’s ready when the top is golden and bubbly. Let it cool for a few minutes before serving, just to let everything set nicely.

Why You'll Love This Recipe

A creamy, cheesy sauce that complements the fresh veggies perfectly.
Quick prep with a rewarding, restaurant-quality outcome.
Uses simple, fresh ingredients that pack a punch in flavor.

Ingredients

1 lb fresh green beans, trimmed

8 oz cremini mushrooms, sliced

2 tbsp unsalted butter

1 medium onion, finely chopped

2 cloves garlic, minced

2 tbsp all-purpose flour

1 cup vegetable broth

1 cup heavy cream

1 tsp dried thyme

1 tsp dried oregano

1/2 cup grated Parmesan cheese

1 cup crispy fried onions

Salt and pepper to taste

Step-by-step Instructions

1. Preheat your oven to 375°F (190°C).

2. In a large pot of boiling salted water, blanch green beans for about 4 minutes until bright green and tender-crisp. Drain and set aside.

3. In a large skillet over medium heat, melt the butter. Add the mushrooms, onion, and garlic, sautéing until the mushrooms are golden and onions are translucent, about 5-7 minutes.

4. Stir in flour, cooking for 1 minute, then slowly whisk in the vegetable broth and heavy cream. Add thyme and oregano, and bring to a simmer, cooking until the sauce thickens, about 3-5 minutes.

5. Remove from heat and stir in half of the Parmesan cheese. Season with salt and pepper to taste.

6. In a large baking dish, combine the green beans with the mushroom sauce. Sprinkle the remaining Parmesan cheese and crispy fried onions over the top.

7. Bake in the preheated oven for 20-25 minutes until the top is golden and bubbly.

8. Let cool for a few minutes before serving.

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