This vegan gluten-free green bean casserole is an easy holiday side, featuring crisp green beans and umami flavor from mushrooms and onions.
If I’m being honest, casseroles are usually not the healthiest foods, so I don’t have too many on this blog. But green bean casserole is a Thanksgiving staple, and this version is loaded with veggies for a delicious side dish that is actually good for you!
The dish cooks in just one pan: it starts with a base of mushrooms, onions, and garlic for rich umami flavor. Then you create a simple sauce with vegetable broth, non-dairy milk, nut butter, and spices. Stir in the beans, transfer to a casserole dish, and bake.
An easy holiday side that requires minimal prep!
Step 1. Preheat the oven to 400°F.
Step 2. In a large skillet, sauté the mushrooms, shallots, and garlic over medium heat until the mushrooms are soft and shallots are translucent. Use a splash of vegetable broth if the veggies start to stick.
Step 3. Add the vegetable broth, non-dairy milk, nut butter, cornstarch, nutritional yeast, salt, and pepper. Stir well. Bring the mixture to a boil and stir until the sauce thickens.
Step 4. Remove the mixture from heat and stir in the green beans.
Step 5. Transfer the mixture to a medium sized** baking dish.
Step 6. In a small bowl mix the topping ingredients.
Step 7. Sprinkle the topping over the beans.
Step 8. Bake for 30 minutes. Let cool 5-10 minutes before serving. Enjoy!
Yes! This casserole can be prepared up to two days in advance. You have two options:
Option 1: Prepare the casserole through step 5, where you transfer the mixture to a baking dish. Then skip to step 8 and bake the casserole without the topping. Then on the day you'd like to serve, add the topping and heat at 250°F for 15-20 minutes until warmed through.
Option 2: Prepare only the onion/mushroom mixture, stopping after step 3. Refrigerate that mixture until you'd like to bake the casserole. On the day you'd like to serve, proceed with the recipe as written: toss in the beans, transfer to a baking dish, add the topping and bake for the time and temp written.
Store this casserole covered in the fridge for up to a week.
Thank you God for this casserole. Thank your for this meal and our celebration of thanksgiving. Amen.
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This vegan gluten-free green bean casserole is an easy holiday side, featuring crisp green beans and umami flavor from mushrooms and onions.
Topping
**If your baking dish is on the smaller side, place a baking sheet on the rack below the dish to catch any spills.
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