Name: Ultimate Vegan Green Bean Casserole That's Decadently Delicious
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Ingredients: 1 pound green beans (trimmed and cut into 1 inch pieces); 8 ounces baby portobello mushrooms (sliced); 2 cloves garlic (minced); 3 tablespoons all-purpose flour; 1 cup non-dairy milk (unsweetened and unflavored); 1 cup French crispy fried onions

As the holiday season approaches, I find myself reminiscing about family gatherings filled with laughter, warmth, and, of course, delicious food. It’s during these cherished moments that one dish stands out — a creamy, bubbling Vegan Green Bean Casserole that instantly brings everyone together. Imagine the vibrant green beans mingling with rich portobello mushrooms and the irresistible crunch of golden fried onions.

Recently, I was challenged to create a version that is not just plant-based but equally comforting and satisfying as the classic recipe. The result? A dish that beckons you with its savory aroma, proving that comfort food can also be vegan without sacrificing flavor.

This easy-to-make casserole is perfect for those busy weeknights or as a standout side at your next potluck. Ready in just about 30 minutes, it offers a delightful blend of textures and tastes. Let’s dive into the ingredients and I’ll show you how to whip up this crowd-pleaser that your friends and family will be talking about long after the plates are cleared!

Why will you love this Vegan Green Bean Casserole?

Comforting, this dish transforms a traditional favorite into a rich vegan delight everyone will adore. Nutritious ingredients like green beans and mushrooms combine to create a hearty flavor that’s both satisfying and guilt-free. Quick prep time means you can whip this up in about 30 minutes, making it a perfect choice for busy dinners. Crowd-pleaser, it’s bound to impress both vegans and non-vegans alike at your next gathering. Experience the irresistible crunch of crispy fried onions layered on top, making every bite a delightful textural experience!

Vegan Green Bean Casserole Ingredients

• Here’s everything you need for a comforting dish!

For the Casserole

Green beans – these vibrant veggies are the star of your Vegan Green Bean Casserole, delivering fresh flavor and crunch.
Baby portobello mushrooms – their rich, earthy taste enhances the creamy filling, adding depth to the dish.
Garlic – this aromatic ingredient infuses the casserole with a deliciously savory base.
All-purpose flour – serves as a thickener, helping create that creamy texture you crave.
Non-dairy milk – unsweetened and unflavored, it acts as a perfect substitute for traditional milk, keeping the casserole vegan and creamy.

For the Topping

French crispy fried onions – these provide the ultimate crunch and a burst of flavor, making each bite irresistible!

How to Make Vegan Green Bean Casserole

Preheat the oven to 350°F (175°C). This ensures your casserole bakes evenly, resulting in that perfect bubbly, golden finish everyone loves.
Steam the green beans by placing them in a saucepan fitted with a steamer basket. Steam for about 5-7 minutes, until they become fork-tender and vibrant green.
Sauté the mushrooms in a large skillet over medium-high heat until they soften, about 5 minutes. Then, add the minced garlic and cook for another minute until fragrant, filling your kitchen with an irresistible aroma.
Sprinkle the flour over the mushrooms, stirring until it’s well combined and no dry flour remains. Next, pour in the non-dairy milk and season with soy sauce. Bring it to a gentle simmer, stirring for about 5 minutes or until the mixture thickens slightly.
Combine the steamed green beans with the creamy mushroom mixture and fold in 1/3 cup of crispy fried onions for that delicious crunch. Transfer everything to an 8×8 inch baking dish, or keep it in your oven-safe skillet. Top with the remaining fried onions for an extra layer of texture.
Bake in the preheated oven for 11-15 minutes, or until it’s bubbling and golden brown on top. Once you remove it from the oven, let it cool for 5 minutes before diving in; it’s worth the wait!

Optional: Drizzle with a bit of vegan parmesan for added richness!
Exact quantities are listed in the recipe card below.

Expert Tips for Vegan Green Bean Casserole

Fresh Beans: Use fresh green beans for the best texture. Canned beans can become mushy and may not hold their vibrant color during cooking.
Mushroom Magic: Baby portobello mushrooms give a hearty flavor, but feel free to mix in shiitake or cremini mushrooms for extra depth.
Thickening Tip: Ensure the flour is well-combined with the mushrooms before adding liquids. This prevents clumps and achieves that creamy consistency in your Vegan Green Bean Casserole.
Crispy Onions: Save some crispy fried onions to add just before serving for added crunch. This keeps the topping crispy instead of soggy!
Storage Tips: If you have leftovers, store in an airtight container in the fridge. Reheat gently to preserve the flavors and textures.

Vegan Green Bean Casserole Variations

Feel free to make this dish your own by trying out these delightful twists!

Gluten-Free: Substitute all-purpose flour with gluten-free flour blend for a gluten-free version that’s just as delicious.
Cheesy: Add nutritional yeast or your favorite vegan cheese to the creamy mixture for a cheesy flavor boost that will make your tastebuds sing!
Spicy: Mix in some red pepper flakes or chopped jalapeños to pack a little heat, giving your casserole a lively kick with every bite.
Herby: Stir in fresh herbs like thyme or rosemary for a fragrant twist that elevates the dish’s flavor profile and makes it even more aromatic.
Lighter: Use unsweetened almond milk instead of non-dairy milk for a lighter option that still maintains all the creaminess you desire.
Mushroom Medley: Experiment with different types of mushrooms like shiitake or cremini to enhance the earthiness of the dish and diversify its flavors.
Nutty: Sprinkle slivered almonds or chopped walnuts on top before baking for an added layer of crunch and a nutty taste that complements the green beans beautifully.
Vegan Cream: Replace non-dairy milk with a creamy cashew or oat cream for an ultra-rich and velvety texture that feels indulgent yet plant-based!

Storage Tips for Vegan Green Bean Casserole

Fridge: Store leftovers in an airtight container for up to 3 days, ensuring the casserole remains fresh and flavorful for your next meal.
Freezer: You can freeze individual portions of the Vegan Green Bean Casserole for up to 3 months. Just make sure to wrap tightly in foil or use freezer-safe containers to prevent freezer burn.
Reheating: When ready to enjoy, thaw overnight in the fridge and reheat in the oven at 350°F (175°C) for about 15-20 minutes, or until heated through.
Serving Tip: For crispy textures, add a sprinkle of fresh crispy fried onions just before serving on reheated portions, bringing back that delightful crunch!

What to Serve with Vegan Green Bean Casserole?

Looking to complete your meal with delicious sides that elevate the flavors of your casserole?

Buttery Mashed Potatoes: Creamy and velvety, these mashed potatoes beautifully complement the richness of the casserole, soaking up all those savory flavors.
Garlic Bread: Every bite of crunchy, buttery garlic bread is perfect for scooping up leftovers and adding a delightful crunch to your plate.
Cranberry Sauce: The sweet-tartness of cranberry sauce creates a flavor explosion that livens up the earthy notes of the casserole. It’s a holiday classic that everyone loves!
Roasted Brussels Sprouts: Caramelized on the outside and tender on the inside, these sprouts add a nutty flavor and a pop of color, enhancing your meal’s overall aesthetic.
Quinoa Salad: A refreshing medley of colors and textures, this salad provides a delightful contrast to the creamy casserole with a mix of grains and veggies for added nutrients.
Apple Crisp: End your meal on a sweet note with this warm, spiced dessert. The comforting flavors of cinnamon apples pair wonderfully with the savory casserole, creating a perfect balance.

For drinks, consider pairing with a light white wine or a sparkling apple cider to complement the dish without overpowering its flavors. Each of these options brings its own unique flair, making your meal a memorable occasion!

Make Ahead Options

These Vegan Green Bean Casserole components are perfect for meal prep, allowing you to save time and simplify your cooking on busy days! You can steam the green beans and sauté the mushroom mixture up to 24 hours in advance; just make sure to refrigerate them in airtight containers to keep them fresh. When you’re ready to serve, combine the prepared components, fold in the crispy fried onions, and pour the mixture into your baking dish. Bake it for 11-15 minutes until bubbly and golden brown. This way, you’ll enjoy all the comforting flavors just as delicious as if they were fresh out of the oven, making your meal planning a breeze!

Vegan Green Bean Casserole Recipe FAQs

How do I choose the right green beans?
Absolutely! When selecting green beans, look for vibrant green color and a crisp texture. Avoid beans with dark spots or yellowing, which indicate overripeness. Fresh green beans should snap easily when bent. I always recommend checking for firmness to ensure a delightful crunch in your casserole.

How should I store leftovers of the Vegan Green Bean Casserole?
To keep your casserole fresh, store leftovers in an airtight container in the fridge. It will stay good for up to 3 days. I often divide it into smaller portions for easy reheating. Just make sure it’s completely cooled before sealing to maintain the best texture and flavor.

Can I freeze Vegan Green Bean Casserole?
Yes, you can! To freeze your casserole, allow it to cool completely first. Then, transfer it into freezer-safe containers or wrap portions tightly in foil. It will last for up to 3 months in the freezer. When you’re ready to enjoy it, simply thaw overnight in the fridge and reheat in the oven at 350°F (175°C) for about 15-20 minutes, adding fresh crispy fried onions on top for crunch!

What should I do if my casserole turns out too watery?
If your Vegan Green Bean Casserole is watery, it might be due to excess liquid from the mushrooms or the non-dairy milk. To fix this, consider simmering the mixture a bit longer to let some moisture evaporate before adding the beans. You can also add a bit more flour to thicken it up. Make sure to stir well for even consistency!

Are there any dietary considerations I should keep in mind?
Very! This Vegan Green Bean Casserole is a fantastic option for those avoiding animal products, but be mindful of allergies. It contains all-purpose flour and can be adjusted for gluten-free diets by substituting with a gluten-free flour blend. For nut allergies, ensure your non-dairy milk is nut-free, as some brands may contain almond or cashew milk.

Can I make this casserole ahead of time?
Absolutely! You can prepare the casserole a day ahead by following all the steps up to the baking part, then cover and refrigerate. When you’re ready to bake, let it sit at room temperature for about 30 minutes before popping it in the oven at 350°F (175°C). This allows for even cooking and a delightful finish!

Vegan Green Bean Casserole Recipe FAQs