Cheesey and quiche-like, with a delicious crunchy brown crust top and bottom – great for Sunday brunch. Broccoli may be substituted for the spinach.
In a 13x9-inch pan, melt the butter. Mix remaining ingredients together and spoon into pan. Bake at 350 degrees F for 30 to 35 minutes. Cool slightly before cutting into squares. Can be served hot or at room temperature.