As I stood in the kitchen this morning, the aroma of sautéing shallots wafted around me, bringing back memories of family gatherings filled with laughter and gratitude. The Ultimate Homemade Green Bean Casserole has always been a staple on our Thanksgiving table, and today, I’m excited to share my version made entirely from scratch. Gone are the days of canned ingredients; instead, we’ll explore a rich and creamy dish that boasts tender green beans and a silky mushroom sauce enhanced by dried shiitake. This comforting casserole not only adds a gourmet touch to your holiday menu but is also a crowd-pleaser that will leave everyone craving more. Ready to elevate your festive feast? Let’s dive into the details of this creamy delight!

Why is this casserole a must-try?
Homemade Goodness: Each bite of this casserole reflects the love and care you put into crafting it from scratch, making it special for any gathering.
Creamy Indulgence: The silky mushroom sauce made with dried shiitake mushrooms adds depth and richness, setting it apart from conventional recipes.
Perfect for Sharing: This dish serves as a perfect centerpiece at holiday feasts or gatherings, sure to impress family and friends alike!
Versatile Pairing: It pairs beautifully with not just turkey, but also ham or even a vegetarian roast, making it a versatile addition to any table. For more comforting side dishes, check out my Bean Soup Cozy and Corn Pudding New.
Easy to Make: With simple steps and accessible ingredients, creating your favorite green bean casserole becomes an enjoyable experience rather than a chore.
Favorite Green Bean Casserole Ingredients
For the Fried Shallots
• Shallots – Provide a sweet, caramelized flavor when fried. Substitute with thinly sliced onions for a milder taste.
• Flour – Aids in creating a crispy coating for the shallots; cornstarch can be used as a gluten-free alternative.
For the Casserole
• Green Beans – Give the dish its base; use thin French-style green beans for best texture.
• Half and Half or Cream – Adds a rich, creamy base to the sauce; whole milk can be a lower-fat substitute but will yield a less creamy result.
• Dried Shiitake Mushrooms – Impart an intense umami flavor to the cream sauce; any dried mushrooms can be used for a similar effect.
• Butter – Forms the base for the roux, enriching the sauce; margarine can be substituted if needed.
• Dry Sherry – Enhances flavor complexity; use white wine or additional mushroom broth as a non-alcoholic substitute.
• Gruyere Cheese – Provides a nutty flavor and creamy texture; can substitute with Swiss cheese for a milder taste.
• Salt, Black Pepper, Nutmeg – Essential for seasoning; freshly cracked pepper enhances flavor, while nutmeg adds warmth and depth.
Step‑by‑Step Instructions for Ultimate Homemade Green Bean Casserole
Step 1: Fry Shallots
Begin by combining flour and a pinch of salt in a bowl. Toss thinly sliced shallots in this mixture until well-coated. Heat oil in a deep skillet to 325°F, then add the shallots, frying them for about 2 minutes until they turn golden brown and crispy. Once done, remove them and allow them to drain on paper towels, showcasing their delightful crunch.
Step 2: Prepare Mushroom Cream
In a saucepan, heat half and half over medium heat until it reaches a gentle simmer. Remove from heat and stir in the dried shiitake mushrooms, covering the pot to allow them to steep for 30 minutes. This step helps infuse the cream with rich, umami flavors that will elevate your Ultimate Homemade Green Bean Casserole.
Step 3: Blanch Green Beans
While the mushrooms are steeping, bring a pot of salted water to boil. Add the trimmed green beans to the boiling water and blanch for 3 minutes until they are tender yet still vibrant green. Immediately transfer them to an ice bath to halt the cooking process, ensuring they maintain their beautiful color and crispness.
Step 4: Blend Mushroom Sauce
After steeping, transfer the mushrooms and infused cream to a blender. Pulse until smooth, allowing the flavors to harmonize into a luscious, creamy sauce. This velvety base is key to making your Ultimate Homemade Green Bean Casserole irresistibly rich and satisfying.
Step 5: Make Roux
In a large saucepan, melt butter over medium heat until bubbly. Sprinkle in flour, stirring continuously for about 2 minutes to create a roux. Gradually whisk in the dry sherry until fully combined. Then, slowly pour in the blended mushroom sauce, cooking and stirring until it thickens nicely, making sure to avoid lumps and achieve that dreamy consistency.
Step 6: Combine
In a greased casserole dish, layer half of the blanched green beans evenly across the bottom. Drizzle half of the creamy mushroom sauce over the beans, ensuring an even coverage. Repeat layering with the remaining beans and sauce, then sprinkle gruyere cheese generously on top to create a beautifully melted finish.
Step 7: Bake
Preheat your oven to 350°F and place the assembled casserole in for 35 to 45 minutes. Bake until the top is golden and bubbly, and the delightful aroma fills your kitchen. If the top browns too quickly, tent it with foil to prevent burning while the casserole continues to bake to perfection.
Step 8: Top with Fried Shallots and Serve
After baking, remove the casserole from the oven and let it rest for a few minutes. Just before serving, generously top it with the crispy fried shallots for an added crunch. Your Ultimate Homemade Green Bean Casserole is now ready to impress at your table, bursting with comforting flavors that everyone will adore!

Favorite Green Bean Casserole Variations
Feel free to make this casserole your own by trying out these delicious twists!
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Lightened Version: Substitute whole milk for half and half or cream for a lighter option. This will provide a less rich but still flavorful dish.
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Mushroom Boost: Increase the amount of dried mushrooms for a more robust, umami flavor. The extra depth will delight any mushroom lover!
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Quick Fix: Use canned fried onions instead of homemade shallots for a quicker preparation. They add that familiar crunch without the fuss.
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Cheese Twist: Experiment with different cheeses like cheddar or mozzarella for varied taste profiles. Each cheese brings a unique flavor, making the casserole personalized.
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Herb Infusion: Add fresh herbs like thyme or rosemary to the mushroom sauce for a fragrant twist. This adds a lovely aromatic quality that elevates your casserole.
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Spice It Up: Sprinkle in some crushed red pepper flakes for a gentle kick. Elevate the flavor profile and excitement in every bite with this simple addition.
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Vegetarian Delight: For a fully vegetarian version, use vegetable broth instead of dry sherry. Maintain the richness without compromising on flavor.
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Mixed Veggies: Incorporate other vegetables like sautéed mushrooms, bell peppers, or peas for added texture and nutrition. This variation not only looks beautiful but also enhances the overall experience.
Whether you’re looking to make it lighter or bring in a delightful new flavor, these variations will keep your favorite green bean casserole fresh and exciting. Looking for more comforting sides? Be sure to check out my Bean Soup Cozy and Corn Pudding New for perfect pairings!
Storage Tips for Favorite Green Bean Casserole
Fridge: Store leftovers in an airtight container in the refrigerator for up to 3 days. This allows the flavors to meld beautifully while keeping the casserole fresh.
Freezer: For longer storage, freeze the casserole (without the fried shallots) for up to 2 months. Wrap it tightly in plastic wrap and then in foil to prevent freezer burn.
Reheating: To reheat, thaw overnight in the fridge, then bake at 350°F for about 25-30 minutes until heated through. Add the crispy shallots just before serving for that delightful crunch.
Make-Ahead: Prepare your favorite green bean casserole a day in advance and store it in the fridge. Just remember to keep the fried shallots separate until you’re ready to enjoy!
What to Serve with Ultimate Homemade Green Bean Casserole
A delightful holiday feast isn’t complete without the perfect accompaniments to elevate your green bean casserole experience.
- Roasted Turkey: Juicy and tender, turkey is the traditional centerpiece that pairs beautifully with the creamy richness of the casserole.
- Cranberry Sauce: Bright and tangy, this sauce adds a refreshing contrast to the lush flavors of your favorite green bean casserole.
- Creamy Mashed Potatoes: Buttery, fluffy, and comforting, these potatoes create an irresistible combination when served alongside the casserole.
- Honey Glazed Carrots: Sweet and vibrant, the caramelized crunch of honey-glazed carrots offers a lovely texture and flavor balance to your meal.
- Stuffing: Savory and herbaceous, stuffing provides a delightful contrast to the creamy casserole and is always a family favorite during the holidays.
- Balsamic Brussels Sprouts: Crisp and slightly tangy, these sprouts add a fresh element to the table, making sure every bite is intriguing and satisfying.
- Garlic Bread: Crunchy on the outside and soft within, garlic bread completes the meal with its comforting embrace and perfect for mopping up any sauce.
- Chardonnay: A glass of chilled Chardonnay beautifully enhances the dish’s flavors, with its crisp acidity brightening the rich creaminess.
- Pumpkin Pie: End your feast on a sweet note with this classic dessert, its spiced flavor harmonizing perfectly with the comfort of your dinner.
Expert Tips for Green Bean Casserole
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Mushroom Power: Infuse dried mushrooms in cream for at least 30 minutes to unlock deep flavors for your favorite green bean casserole.
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Frying Secrets: Ensure the oil temperature is 325°F for perfect fried shallots. Too cool, and they’ll absorb oil; too hot, and they’ll burn.
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Avoid Sogginess: Blanch green beans just until tender before shocking them in ice water; this keeps them vibrant and prevents the casserole from becoming watery.
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Roux Perfection: Stir the roux for at least 2 minutes to eliminate raw flour taste and achieve that creamy consistency in the mushroom sauce.
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Layering Love: For even seasoning, make sure to layer the green beans and sauce evenly; this helps to avoid clumping and ensures every bite is delicious.
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Tent and Check: If the top of the casserole browns too quickly, tent it with foil. This way, you’ll prevent burning while allowing the casserole to cook through.
Make Ahead Options
These Ultimate Homemade Green Bean Casserole preparations are perfect for busy cooks looking to save time while still enjoying a homemade meal! You can prepare the creamy mushroom sauce up to 48 hours in advance; simply blend the steeped mushrooms and refrigerate in an airtight container. Additionally, blanch the green beans and store them in the refrigerator for up to 3 days to maintain their vibrant color. When you’re ready to bake, layer the prepped components in a greased dish, top with cheese, and bake at 350°F for about 35 to 45 minutes. Just remember to reserve the crispy shallots and add them just before serving to keep their crunch intact, ensuring your Ultimate Homemade Green Bean Casserole is just as delicious as when freshly made!

Favorite Green Bean Casserole Recipe FAQs
How do I choose the best green beans?
Look for firm, bright green beans without dark spots or blemishes. French-style green beans are preferred for their tender texture. Ensure they snap easily when bent, indicating freshness!
What’s the best way to store leftovers?
Store your Favorite Green Bean Casserole in an airtight container in the refrigerator for up to 3 days. This keeps the casserole fresh and allows the flavors to meld beautifully, enhancing the taste even more.
Can I freeze my green bean casserole?
Absolutely! To freeze, first let the casserole cool completely. Then, wrap it tightly in plastic wrap followed by foil, and pop it in the freezer for up to 2 months. When you’re ready to enjoy, thaw it overnight in the fridge before reheating.
How can I fix a watery green bean casserole?
If you notice your casserole is watery, it could be due to overcooking the green beans or not properly chilling them in an ice bath. To remedy this, reduce the cooking time for the beans and ensure they are fully blanched but still crisp. Also, be sure to thicken your mushroom sauce adequately by allowing the roux to cook for a sufficient amount of time.
Are there any dietary considerations I should be aware of?
If you’re accommodating allergies, keep in mind that this recipe contains dairy due to the half and half and cheese. For a vegan option, substitute the dairy with plant-based alternatives like coconut cream and nutritional yeast for a cheesy flavor. Always check labels for allergens if serving to friends and family!
Can I make this casserole ahead of time?
Yes! You can prepare your Favorite Green Bean Casserole a day in advance. Assemble everything except for the fried shallots. Store it covered in the refrigerator, and when you’re ready to serve, bake it and add the shallots just before serving for that crispy finish!

Deliciously Creamy Favorite Green Bean Casserole from Scratch
Ingredients
Equipment
Method
- Combine flour and a pinch of salt in a bowl. Toss thinly sliced shallots in this mixture until well-coated. Heat oil in a deep skillet to 325°F, then add the shallots, frying them for about 2 minutes until golden brown and crispy. Remove and allow to drain on paper towels.
- In a saucepan, heat half and half over medium heat until gentle simmer. Remove from heat and stir in dried shiitake mushrooms, covering to steep for 30 minutes.
- Bring a pot of salted water to boil. Add trimmed green beans and blanch for 3 minutes until tender yet vibrant green. Transfer to an ice bath.
- Transfer mushrooms and infused cream to a blender. Pulse until smooth, creating a luscious, creamy sauce.
- In a large saucepan, melt butter over medium heat until bubbly. Sprinkle in flour, stirring for about 2 minutes to create a roux. Gradually whisk in dry sherry until combined, then pour in the blended mushroom sauce, cooking until thick.
- In a greased casserole dish, layer half of the blanched green beans. Drizzle half of the mushroom sauce, repeat with remaining beans and sauce, then sprinkle gruyere cheese on top.
- Preheat oven to 350°F and bake for 35 to 45 minutes until golden and bubbly. Tent with foil if the top browns too quickly.
- Remove from oven and let rest for a few minutes. Top with crispy fried shallots before serving.

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