This potato casserole is similar to au gratin potatoes, with the addition of hearty mushrooms and onions. If you can't tolerate dairy, this recipe may not be for you because it's super cheesy.

Get the recipe: Potato, Cauliflower and Spinach Casserole This version captures the essence of my grandmother’s version, but ...

Add mushrooms and cook until the liquid evaporates (15-20 minutes). If the pan is not large enough, cook mushrooms in batches. Stir in salt and oregano. Drain the spinach, squeeze it dry ... and ...