Vegan Green Bean Casserole

Name: Vegan Green Bean Casserole
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Cuisine: American
Ingredients: 1 lb (450 g) fresh green beans: adds crunch, freshness, and vibrant color; 1 tbsp olive oil: used to sauté vegetables and build flavor; 2 cloves garlic, minced: adds aromatic depth; 8 oz (225 g) mushrooms, sliced: brings earthy, umami flavor; 1/2 cup vegetable broth: forms the base of the sauce; 1 cup unsweetened plant milk (e.g., soy, almond): provides creaminess; 1 tbsp tamari or soy sauce: boosts umami and saltiness; 2 tbsp nutritional yeast: adds cheesy, nutty flavor; 2 tbsp cornstarch (or arrowroot powder): thickens the sauce; 1/2 tsp salt: enhances overall flavor; 1/4 tsp black pepper: adds a mild kick; 1 cup crispy fried onions or breadcrumbs: gives a crunchy topping

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Looking for a dish that’s comforting, creamy, and 100% plant-based? This Vegan Green Bean Casserole delivers all the nostalgic holiday vibes—without the dairy. Whether you’re prepping for Thanksgiving or craving a cozy weeknight side, this easy vegan casserole is flavorful, wholesome, and family-approved. With tender green beans, a savory mushroom sauce, and crunchy topping, it’s a modern, healthier twist on the classic favorite.

Why You’ll Love This Vegan Green Bean Casserole

There’s something irresistibly satisfying about a rich, baked casserole—especially one that’s entirely plant-based. This Vegan Green Bean Casserole is:

Whole-food based: No processed cream-of-anything soup needed
Gluten-free adaptable: Easily swap breadcrumbs to suit your needs
Make-ahead friendly: Prepare in advance and bake when ready
Holiday-worthy: A perfect side for Thanksgiving, Christmas, or any celebratory dinner

Whether you’re new to vegan cooking or a seasoned pro, this dish delivers big on taste, texture, and crowd-pleasing appeal.

Ingredients That Build Big Flavor

To achieve the creamy depth and classic texture of traditional casseroles, this vegan version uses whole-food ingredients that come together beautifully.

Fresh Green Beans: Provide crunch, freshness, and vibrant color
Garlic: Adds savory aroma and depth to the sauce
Mushrooms: Create an earthy, umami-rich base for the vegan cream sauce
Vegetable Broth: Infuses flavor while forming the sauce foundation
Unsweetened Plant Milk: Creates the creamy texture without dairy
Tamari or Soy Sauce: Boosts the umami factor while keeping it gluten-free if needed
Nutritional Yeast: Adds a cheesy, nutty flavor—perfect for dairy-free dishes
Cornstarch or Arrowroot Powder: Helps thicken the sauce for that perfect casserole consistency
Salt & Pepper: Essential for balancing and elevating all the other flavors
Oil (Olive or Avocado): Used to sauté the mushrooms and garlic for flavor development
Crispy Fried Onions or Breadcrumbs: Adds the signature crunchy topping (choose gluten-free or oil-free versions as needed)

Ingredient Swaps and Substitutions

Don’t have everything on hand? Here are easy swaps that keep this vegan green bean casserole just as delicious:

Green Beans: Substitute with frozen green beans if fresh ones aren’t available—just thaw and drain well.
Mushrooms: Use canned mushrooms in a pinch, or sub with sautéed zucchini for a different twist.
Plant Milk: Almond, soy, or oat milk all work—just ensure it’s unsweetened and unflavored.
Tamari: Replace with coconut aminos or soy sauce if gluten isn’t a concern.
Cornstarch: Arrowroot or tapioca starch are great alternatives for thickening.

Step-by-Step: How to Make Vegan Green Bean Casserole

Making a homemade vegan green bean casserole is easier than you might think. Here’s how to do it from scratch:

Blanch the Green Beans
Trim and cut your green beans, then blanch them in boiling salted water for 4–5 minutes. Immediately transfer to an ice bath to lock in the bright green color and stop the cooking. Drain and set aside.
Prepare the Mushroom Sauce
In a large skillet, heat oil over medium heat. Add chopped garlic and sliced mushrooms. Cook for 5–7 minutes until the mushrooms release their moisture and become golden brown. Add tamari, vegetable broth, and plant milk, stirring to combine.
Thicken the Sauce
In a small bowl, mix cornstarch with a bit of water to make a slurry. Stir this into the mushroom sauce, then simmer for a few minutes until thickened. Add nutritional yeast, salt, and pepper to taste.
Combine and Assemble
Add the blanched green beans to the skillet and gently toss to coat with the creamy mushroom sauce. Transfer everything to a baking dish, spreading evenly.
Top and Bake
Sprinkle crispy fried onions or breadcrumbs evenly over the top. Bake at 400ºF (200ºC) for about 15–20 minutes, or until bubbling and golden on top.
Serve Warm
Let it rest for 5 minutes out of the oven before serving. Garnish with fresh herbs if desired.

Tips & Tricks for Casserole Success

Master the art of this plant-based side with these practical tips:

Don’t overcook the beans: Blanching is key to avoid mushy texture—aim for crisp-tender.
Use unsweetened milk: A neutral plant milk ensures the savory flavors shine.
Avoid watery sauce: Simmer the sauce long enough to achieve a rich, thick consistency before combining with the beans.
Make it ahead: Prep the sauce and green beans up to a day in advance. Store separately and assemble before baking.
Boost the umami: A dash of smoked paprika or miso paste can deepen the flavor profile.

Adding these small details can elevate your vegan green bean casserole from good to unforgettable.

Pairing Ideas and Tasty Variations

This vegan green bean casserole isn’t just for holidays. Serve it alongside a variety of mains and try these fun twists:

Perfect Pairings

Lentil Loaf or Vegan Meatloaf: A hearty pairing for a full holiday spread
Roasted Sweet Potatoes: Adds a sweet contrast to the savory casserole
Vegan Stuffing or Cornbread: Classic sides that round out the meal
Cranberry Sauce: The tartness balances the creamy, rich flavor

Creative Variations

Gluten-Free Version: Use gluten-free tamari and gluten-free fried onions or almond flour topping.
Oil-Free: Sauté mushrooms in veggie broth and use air-fried onions or lightly toasted breadcrumbs.
Spicy Twist: Add red pepper flakes or a pinch of cayenne to the mushroom sauce for a kick.
Cheesy Top: Add vegan shredded cheese on top before baking for extra creaminess.

Make-Ahead & Storage Tips

Make Ahead: Prep everything and store unbaked casserole in the fridge for up to 24 hours.
Freeze: Freeze leftovers in an airtight container for up to 2 months. Thaw overnight and reheat in the oven.
Reheat: Warm in the oven at 350ºF until heated through for the best texture.

Why This Vegan Classic Deserves a Spot on Your Table

Aside from being an absolute classic, this vegan green bean casserole aligns beautifully with modern dietary preferences—no dairy, no meat, and customizable for gluten-free or oil-free needs. It brings everyone to the table, offering a nostalgic taste of tradition while embracing wellness and sustainability.

Loaded with plant-powered ingredients and rich flavors, this casserole proves that comfort food doesn’t have to compromise on health or ethics. Whether you’re serving vegans, vegetarians, or omnivores, this dish delivers the kind of hearty satisfaction that defines holiday gatherings.

This Vegan Green Bean Casserole proves that comfort food can be both nostalgic and nourishing. Whether you’re hosting a festive holiday dinner, meal-prepping for the week, or simply craving a creamy, satisfying side dish, this recipe checks every box: it’s delicious, plant-based, flexible, and loved by vegans and non-vegans alike.

Its rich, savory mushroom sauce, tender green beans, and crispy topping come together in perfect harmony—without relying on dairy or processed ingredients. Plus, it’s easy to make ahead, simple to adapt for special diets, and guaranteed to become a staple in your seasonal menu.

From Thanksgiving tables to everyday dinners, this is the casserole that brings everyone back for seconds.

FAQ: Vegan Green Bean Casserole

How can I make this Vegan Green Bean Casserole gluten-free?

To make a gluten-free vegan green bean casserole, swap the soy sauce for gluten-free tamari, use cornstarch or arrowroot for thickening, and replace traditional fried onions with a gluten-free version or crushed gluten-free crackers. Be sure to check labels on breadcrumbs or any toppings you use.

Can I use canned green beans instead of fresh?

Yes, but with caution. While fresh green beans give the best texture and color, you can use canned green beans if you’re short on time. Be sure to drain and rinse them well, and skip the blanching step. Keep in mind that canned beans are softer and may result in a mushier texture.

Can I prepare this casserole ahead of time?

Absolutely! This vegan green bean casserole is perfect for making ahead. You can prep the sauce and green beans a day in advance, assemble the casserole, and refrigerate it unbaked. Add the topping just before baking to keep it crispy. It’s a great time-saver for holiday meal prep.

What can I use instead of fried onions for a healthier topping?

If you’re looking to cut down on oil or want a healthier option, try topping your casserole with toasted panko breadcrumbs, crushed almonds, or air-fried shallots. These alternatives still give you that crave-worthy crunch while keeping the recipe lighter and more whole-food focused.

More Relevant Recipes

Creamy Pumpkin Gnocchi Recipe: This cozy and creamy fall dish is a perfect match for lovers of comfort food like Vegan Green Bean Casserole. It features tender gnocchi in a velvety pumpkin sauce, making it a delightful seasonal side or main for plant-based eaters.
Stuffed Butternut Squash Recipe: Roasted butternut squash halves filled with hearty grains and veggies bring the same warm, savory notes as a classic casserole. It’s a wholesome, visually stunning side perfect for holiday spreads.
Vegan Fall Pasta Salad: A colorful, nutrient-packed salad made with roasted seasonal vegetables and pasta. This recipe shares the same plant-based, satisfying comfort as green bean casserole, but with a lighter, fresher twist.

Vegan Green Bean Casserole – Best Dairy-Free Holiday Side

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Why You’ll Love This Vegan Green Bean Casserole