Vegan green bean casserole with cashew mushroom sauce
This vegan green bean casserole is a delicious, plant-based take on the classic holiday favorite. Made with a rich cashew mushroom sauce and topped with crispy fried onions, it delivers all the cozy, nostalgic flavor of the original. Perfect for Thanksgiving or any festive meal!
Prep Time10 minutesmins
Cook Time37 minutesmins
Total Time47 minutesmins
Course: Side Dish
Cuisine: American, Vegan
Keyword: holiday recipe, thanksgiving recipe, thanksgiving side dish
Put raw cashews and a cup of water into a high-speed blender.* Blend until completely smooth. (You'll know it's done when there are no cracking sounds in the blender.) Then set aside.
Fill a pot with steamer insert with about an inch of water. Bring to a boil. Put trimmed and halved green beans into the steamer insert and cover with a lid. Steam until the green beans are bright and tender, about 5 minutes.
To keep their bright color and stop their cooking, pour the green beans into a colander in the sink, and run cold water over them. Turn them occasionally so that all of the green beans get cool. Once the green beans are cold, pour them onto a clean kitchen towel to dry while you continue with the rest of the recipe.
Bring a large non-stick ceramic skillet to a medium heat, and add avocado oil. Scatter the sliced mushrooms across the skillet, and top with salt. Saute about 10 minutes, until the mushrooms are tender and have released their liquid.
Add vegan butter and garlic. Allow the butter to melt and garlic to soften and become fragrant, about 30 seconds. Then top the mushrooms with red vinegar.
Sprinkle flour on top of the mushrooms, and use a spatula to combine and slightly cook the flour for about a minute.
Add 1 cup of water, Better Than Bouillon no chicken base, and pepper to the skillet. (A few twists of the pepper grinder should be just right.) Use a spatula to combine, being careful to get everything off the bottom of the skillet, while the sauce reduces and thickens.
Once the sauce has the consistency of gravy, stir in tamari.
Pour the reserved cashew sauce from the blender into the skillet. Bring to a simmer, then lower heat and stir frequently, until the sauce is quite thick, roughly 5 minutes. Remove from the heat.
Stir in the green beans and ⅔ cup French fried onions.
Transfer the green bean casserole to an 8x8 baking dish, and top evenly with the remaining ⅔ cup of French fried onions.
Transfer to the oven. Bake until the sauce is bubbly around the edges and the onions are nicely browned, about 10 minutes.
Notes
*If you're using a high-speed blender, you don't need to soak the raw cashews before using. However, if you're using a standard blender, it may need some help to completely break down the cashews into a smooth cream. Here are possible 3 workarounds (Pick 1 of them):
Grind the dry, raw cashews first in a coffee grinder until they become a flour, and then put them in the blender with the other ingredients. (My favorite option!)
Soak the cashews in water overnight and drain before following the recipe.
Cover the cashews in boiling water and let them soak 10-20 minutes before draining and using.
Storage instructionsStore leftovers in an airtight container in the fridge. They will keep for 3 or 4 days.When you're ready to eat, stir in a splash of plain, unsweetened non-dairy milk to loosen the sauce. Then reheat in the oven, air fryer, or microwave. During the last few minutes of warming, add a fresh layer of crispy fried onions on top for extra crunch.