Ultimate Green Bean Casserole That’ll Wow Your Guests Recipe
Introduction
Discover the Ultimate Green Bean Casserole, a comforting blend of fresh green beans, savory mushrooms, and a creamy sauce topped with crispy fried onions. This classic American dish is perfect for family dinners or special gatherings and is sure to impress your guests with its rich flavors.

Ingredients
- 2 pounds fresh green beans
- 4 tablespoons unsalted butter (for sautéing mushrooms)
- 8 ounces crimini mushrooms, sliced
- 2 cloves garlic, minced
- 1 can Campbell’s cream of mushroom soup
- 1 cup half and half
- 1 tablespoon soy sauce
- 2 sprigs fresh thyme
- 1 cup French’s crispy fried onions (for topping)
Instructions
- Step 1: Preheat your oven to 350°F (175°C).
- Step 2: Bring a large pot of water to a boil. Blanch the green beans for 3-4 minutes until tender-crisp, then immediately transfer them to a bowl of ice water to stop the cooking. Drain and set aside.
- Step 3: In a sauté pan, melt the butter over medium heat. Add the sliced mushrooms and cook until they turn golden brown, about 5-7 minutes. Add the minced garlic and cook for an additional 1 minute, stirring frequently.
- Step 4: In a large bowl, whisk together the cream of mushroom soup, half and half, soy sauce, and fresh thyme leaves.
- Step 5: Add the sautéed mushrooms and the blanched green beans to the soup mixture. Stir gently to combine everything evenly.
- Step 6: Transfer the mixture into a casserole dish and cover with foil. Bake in the preheated oven for 20 minutes.
- Step 7: Remove the foil, sprinkle the crispy fried onions evenly over the top, and bake uncovered for another 5-10 minutes until the onions are golden and crisp.
- Step 8: Remove from the oven and let cool slightly before serving. Garnish with fresh thyme if desired.
Tips & Variations
- For extra flavor, add a splash of white wine to the mushroom sauté before combining with the soup mixture.
- Use frozen green beans if fresh are unavailable; just adjust blanching time accordingly.
- Try different crispy toppings like toasted breadcrumbs or crushed fried shallots for a twist.
- Make it gluten-free by selecting a gluten-free cream of mushroom soup and fried onions.
Storage
Store any leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, cover the casserole with foil and warm it in a 350°F oven until heated through, about 15-20 minutes. Avoid microwaving to keep the topping crispy.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I prepare the casserole ahead of time?
Yes, you can assemble the casserole a day ahead. Keep it covered in the refrigerator and add the fried onions just before baking.
What can I substitute for half and half?
If you don’t have half and half, you can use equal parts milk and heavy cream or just whole milk for a lighter version.
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Ultimate Green Bean Casserole That’ll Wow Your Guests Recipe
- Total Time: 55 minutes
- Yield: 6 servings 1x
Description
This Ultimate Green Bean Casserole combines fresh green beans with sautéed crimini mushrooms in a creamy, savory mushroom sauce. Topped with crispy fried onions and baked to golden perfection, this classic American side dish is sure to impress your guests at any dinner gathering.
Ingredients
For the Casserole
- 2 pounds fresh green beans
- 4 tablespoons unsalted butter (for sautéing mushrooms)
- 8 ounces crimini mushrooms, sliced
- 2 cloves garlic, minced
- 1 can Campbell’s cream of mushroom soup
- 1 cup half and half
- 1 tablespoon soy sauce
- 2 sprigs fresh thyme
For the Topping
- 1 cup French’s crispy fried onions
Instructions
- Preheat Oven: Preheat your oven to 350°F to prepare for baking the casserole.
- Blanch Green Beans: Boil a large pot of water and blanch the green beans for 3-4 minutes until tender-crisp. Immediately transfer them to an ice water bath to stop cooking and preserve their vibrant green color.
- Sauté Mushrooms: In a sauté pan, melt the butter over medium heat. Add the sliced crimini mushrooms and cook until golden brown. Add the minced garlic and sauté briefly until fragrant, about 1 minute.
- Prepare Sauce: In a large bowl, combine the cream of mushroom soup, half and half, soy sauce, and fresh thyme sprigs. Mix well to create a creamy, flavorful sauce.
- Combine Ingredients: Add the sautéed mushrooms and blanched green beans into the sauce mixture. Stir gently to coat everything evenly.
- Assemble Casserole: Transfer the green bean mixture into a casserole dish, spreading it out evenly.
- Bake Covered: Cover the casserole dish with foil or a lid and bake in the preheated oven for 20 minutes to allow flavors to meld and the mixture to heat through.
- Add Topping and Finish Baking: Remove the cover and sprinkle the crispy fried onions evenly over the top. Return to the oven and bake uncovered for another 5-10 minutes until the onions are golden and crispy.
- Serve: Remove from oven and let cool slightly before serving. Garnish with fresh thyme if desired.
Notes
- Serve the casserole warm for the best flavor and texture.
- Garnish with additional fresh thyme sprigs for an extra burst of aroma and presentation.
- Store leftovers in an airtight container in the refrigerator for up to 3 days.
- Reheat leftovers gently in the oven to retain crispiness of fried onions.
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Category: Dinner
- Method: Baking
- Cuisine: American
Keywords: green bean casserole, mushroom casserole, holiday side dish, creamy green beans, crispy fried onions, American dinner recipes

