Green bean casserole is a quintessential holiday dish, a staple on dinner tables during Thanksgiving and Christmas, often making an appearance at family gatherings, potlucks, and comfort-food feasts. While the traditional recipe features creamy soup, crispy fried onions, and, typically, meat-based ingredients, there’s a growing demand for vegetarian and even vegan versions of this classic side. Whether you’re looking to accommodate dietary preferences, avoid processed foods, or just want a fresher, plant-based twist on the classic, a vegetarian green bean casserole is the way to go.
This recipe is designed to maintain the creamy, savory richness of the original while swapping out any meat or non-plant-based ingredients. So, if you’re after a comforting, crowd-pleasing dish that’s easy to whip up and doesn’t sacrifice flavor, you’re in the right place.
Green Bean Casserole Vegetarian Recipe
Here’s the breakdown of the vegetarian version of the classic green bean casserole recipe. It offers that same satisfying balance of creamy, crispy, and savory notes, but without any of the animal products.
Ingredients Needed
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Green Beans (fresh or frozen): 4 cups
- Fresh green beans are ideal if you want a firmer texture, while frozen beans are a convenient option and work just as well for this recipe. Either way, they serve as the hearty base of the dish.
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Olive Oil: 1 tablespoon
- Used for sautéing onions and garlic. It provides a rich, smooth base for the flavor profile and also helps balance out the creamy texture.
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Yellow Onion: 1 medium, finely chopped
- Adds sweetness and depth to the casserole. The onion will be caramelized to develop that rich, savory base flavor.
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Garlic Cloves: 3 cloves, minced
- Garlic enhances the aromatic, savory component, pairing perfectly with the green beans and giving the dish a delicious punch.
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Mushrooms: 2 cups, sliced
- Mushrooms bring an earthy, umami flavor that substitutes for the richness you’d typically get from meat or cream-based ingredients.
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Vegetable Broth: 1 cup
- Used for the creamy base, vegetable broth gives the casserole a savory, flavorful liquid that binds the ingredients together.
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Almond Milk (or other non-dairy milk): 1 cup
- Replacing traditional dairy milk, almond milk offers a smooth, light consistency without altering the taste. You can also use oat or soy milk if you prefer.
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All-Purpose Flour: 3 tablespoons
- This helps to thicken the casserole mixture into that luscious, creamy texture without needing cream or cheese.
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Vegan Worcestershire Sauce: 1 tablespoon
- Adds a bit of tang and depth to the flavor, mimicking the traditional meat-based umami of the original recipe.
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Fresh Thyme: 1 teaspoon (or 1 tablespoon dried thyme)
- Fresh thyme provides a pleasant herbal note that complements the green beans and mushrooms.
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Crispy Fried Onions: 1 cup (for topping)
- These crunchy, savory onions are a must for that signature crispy topping. Use store-bought vegan fried onions or make your own if you prefer!
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Salt and Pepper: To taste
- Essential for seasoning and bringing the flavors together.
Cooking Instructions
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Prepare The Green Beans
- If you’re using fresh green beans, wash them thoroughly and trim the ends. Steam or blanch the beans in boiling water for about 3 minutes until they’re tender-crisp. Drain and set aside.
- If using frozen green beans, simply thaw them out and give them a quick rinse.
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Sauté The Aromatics
- In a large skillet, heat the olive oil over medium heat. Add the chopped onion and cook for 5-7 minutes, stirring occasionally, until they become soft and golden.
- Add the minced garlic and cook for another 1-2 minutes, until fragrant.
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Cook The Mushrooms
- Toss the sliced mushrooms into the skillet with the onions and garlic. Sauté for about 5 minutes, until the mushrooms release their moisture and begin to brown.
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Make The Creamy Sauce
- Stir in the flour and cook for 2-3 minutes to form a roux. Slowly whisk in the vegetable broth and almond milk. Stir constantly to avoid lumps.
- Bring the mixture to a simmer, cooking for 3-4 minutes until the sauce thickens.
- Add the vegan Worcestershire sauce, thyme, salt, and pepper to taste.
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Assemble The Casserole
- In a large mixing bowl, combine the green beans with the creamy mushroom mixture. Stir gently to coat the beans evenly.
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Bake The Casserole
- Preheat the oven to 375°F (190°C). Transfer the green bean mixture into a greased 9×13-inch baking dish. Top with the crispy fried onions, spreading them out evenly.
- Bake for 25-30 minutes, or until the casserole is bubbly and the onions are golden and crispy.
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Serve
- Let the casserole cool for a few minutes before serving. It’s best enjoyed fresh, but it can also be stored and reheated.
Ingredient Science Spotlight
Let’s take a deeper look at a few of the key ingredients in this vegetarian green bean casserole:
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Mushrooms
- Mushrooms are an excellent source of umami, the savory “fifth taste” that makes food feel satisfying. This is what gives the dish its hearty, meaty flavor without the need for animal products. Mushrooms contain compounds like glutamates, which naturally enhance the flavor profile of dishes. They’re also packed with vitamins (like vitamin D) and minerals, including potassium and selenium.
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Flour As A Thickening Agent
- Flour serves as the key ingredient for thickening the creamy sauce. When flour is mixed with a liquid and heated, the starch molecules swell and trap moisture, forming a smooth, viscous mixture. This is the base for many gravies, sauces, and creamy dishes like our casserole.
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Almond Milk
- Almond milk is a plant-based alternative to dairy milk that provides a light and neutral flavor. The almond’s natural oils contribute to the smooth texture of the casserole’s sauce, while being lower in calories and fat compared to whole milk or cream.
Expert Tips
- Flavor Boost: For an extra depth of flavor, try adding a splash of white wine or lemon juice to the mushroom mixture. The acidity will balance the creaminess and add brightness to the dish.
- Make-Ahead Option: You can prepare the casserole a day ahead, cover it with foil, and store it in the fridge. On the day of serving, bake as usual but add an extra 10-15 minutes to ensure it’s heated through.
- Crispy Onions: If you want even more crunch, make your own crispy fried onions at home! Soak thinly sliced onions in buttermilk (or a dairy-free alternative), then coat them in seasoned flour and fry until crispy. It’s a bit more work, but the result is well worth it.
Recipe Variations
This vegetarian green bean casserole can be customized in so many ways. Here are a few ideas to make it even more exciting:
- Vegan Version: To make the casserole fully vegan, ensure you use plant-based butter, milk, and Worcestershire sauce. You can even swap the fried onions for homemade or store-bought vegan alternatives.
- Cheesy Twist: Add a handful of dairy-free cheese shreds into the creamy mixture for a “cheesy” version. Nutritional yeast is also a great option to add a cheesy flavor without the dairy.
- Nutty Crunch: If you love a bit of extra crunch, sprinkle chopped nuts (like pecans or almonds) over the top in addition to the fried onions. They add a wonderful texture and a nutty flavor that complements the beans.
- Spicy Kick: Add a pinch of red pepper flakes or a splash of hot sauce to the sauce mixture for a bit of heat. This will give the dish a spicy kick without overpowering the other flavors.
Final Words
Vegetarian green bean casserole is an amazing dish that’s as comforting as the traditional version but with all the benefits of plant-based ingredients. It’s the perfect dish for anyone looking to enjoy a healthier, cruelty-free holiday meal without sacrificing flavor or tradition. The rich, creamy sauce, tender green beans, and crispy topping work together to create a satisfying experience that can easily win over even the most dedicated carnivores.
FAQs
What Is A Green Bean Casserole Vegetarian Recipe?
A green bean casserole vegetarian recipe is a plant-based version of the classic green bean casserole. It typically includes green beans, a creamy sauce (often made with plant-based ingredients like coconut or almond milk), and a crispy topping, without any meat products like bacon or chicken.
Can I Make A Vegan Green Bean Casserole Instead Of Vegetarian?
Yes, you can make a vegan green bean casserole by substituting the dairy ingredients. For example, use vegan butter, plant-based milk (such as almond or soy milk), and vegan-friendly crispy toppings like panko breadcrumbs instead of regular ones.
What Are The Best Green Beans To Use For A Vegetarian Casserole?
Fresh green beans are the ideal choice for green bean casserole, as they maintain their texture and flavor. However, you can also use frozen green beans if fresh ones are unavailable. Just be sure to thaw and drain them before using.
How Can I Make The Creamy Sauce For A Green Bean Casserole Vegetarian Recipe?
For a creamy sauce, combine a plant-based milk (such as almond or oat milk) with flour or cornstarch to thicken it. You can also add vegetable broth, garlic, and seasonings for extra flavor. Some recipes use cashews blended with water for a creamy base.
Can I Use Store-bought Mushroom Soup In A Vegetarian Green Bean Casserole?
Yes, many store-bought mushroom soups are already vegetarian. Just make sure to check the label for any animal-derived ingredients like beef or chicken stock. Alternatively, you can make a homemade mushroom sauce to ensure it fits your dietary needs.
What Can I Substitute For Fried Onions In A Green Bean Casserole Vegetarian Recipe?
You can substitute fried onions with crispy panko breadcrumbs, roasted chickpeas, or even homemade fried onions made from thinly sliced onions coated in flour and baked or fried.
Can I Add Other Vegetables To A Vegetarian Green Bean Casserole?
Yes, you can add other vegetables to the casserole, such as mushrooms, carrots, or bell peppers. These can enhance the flavor and texture of the dish while keeping it plant-based.
How Do I Make A Green Bean Casserole Vegetarian Recipe Gluten-free?
To make the casserole gluten-free, substitute regular flour with a gluten-free flour blend or cornstarch for thickening the sauce. Ensure any topping ingredients like breadcrumbs are gluten-free or opt for gluten-free panko.
Can I Prepare A Green Bean Casserole Vegetarian Recipe Ahead Of Time?
Yes, you can prepare the casserole ahead of time. Assemble the casserole, cover it with foil, and refrigerate for up to 24 hours before baking. When ready to serve, simply bake it until heated through and the topping is golden brown.
How Can I Make A Green Bean Casserole Vegetarian Recipe Spicier?
To add some heat, incorporate spices like red pepper flakes, cayenne pepper, or a few dashes of hot sauce into the creamy sauce. Alternatively, you can add diced jalapeños or chipotle peppers for a smoky, spicy kick.