If you are looking for a savory breakfast or brunch recipe, you need to try this spinach mushroom quiche. This rich, savory tart is easy to make with sautéed spinach, mushrooms and onions along with eggs and gruyere cheese in the filling for extra flavor. It’s the perfect dish to eat throughout the week or to make ahead of time for guests! It’s a variation of quiche lorraine, but made to be vegetarian. It has all the rich flavor of a classic quiche with cooked vegetables throughout.