Easy Broccoli Quinoa Casserole (Gratin) with Vegan Cheese

Healthy broccoli quinoa casserole (savory soufflé) which is vegan, gluten-free, grain-free and easy to make. This creamy cheesy broccoli bake (gratin) is perfect for dinner, especially on weekends. #vegan #glutenfree #broccoli #quinoa #casserole