Although cut into squares like brownies, these savory treats taste more like a quiche. Great as an appetizer or with soup or a salad, these freeze beautifully, just waiting for unexpected company!
Variations: use Swiss cheese or a blend of Italian cheeses. Substitute chopped broccoli or shredded zucchini for the spinach. Add chopped pepperoni or cooked sausage or bacon pieces, chopped red pepper, or sliced mushrooms.