This vegan green bean casserole is made with fresh green beans simmered in a savory mushroom sauce and topped with crispy homemade pan-fried French fried onions.
The green bean casserole portion of this dish can be prepared in advance up to the baking step. Allow the casserole to cool after it’s finished simmering and either transfer it to a storage container or refrigerate in the dish you plan to bake it in.
You can begin soaking your onions and mix the flour coating early in the day. Start the coating and frying process when your casserole has about 10 minutes of baking time left.