If you're looking for a healthy side dish, this is your recipe. This vegan green bean casserole is made with a cashew-based mushroom sauce that is super creamy and delicious. It tastes like it's made with cream and cheese, but it's 100% dairy-free.
Preheat your oven to 375 degrees. Cover the bottom of an 11"x9" casserole dish with a thin layer of the mushroom sauce. Top with half the green beans, then half the remaining mushroom sauce. Repeat once more. Pour 1/2 cup of water over the top then seal tightly with aluminum foil.
Bake in the preheated oven for 30-40 minutes, or until hot, bubbling and the green beans are soft.
While the green bean casserole is in the oven, prepare the topping. Heat the olive oil in a large frying pan over medium-high heat. Add the sliced onion and cook until it is soft and brown, about 8-10 minutes. Add the panko to the pan and let it brown, about 2 minutes.
Once the green beans are soft, mix them around in the casserole dish, pour the topping over the casserole and serve immediately.