Preheat 350°F oven
Whip together egg and water until frothy.
Lay cooked slices in a single layer on the baking sheet without the edges of the slices touching or overlapping.
Bake at 350F degrees until cheese melts and begins to bubble, about 7-12 minutes.
Try zucchini slices instead of eggplant!
Experiment with different sauces and cheese blends! We enjoyed a blend with ricotta, mozzarella, mild cheddar, and provolone.
Add a slice of pepperoni or roasted hot peppers for a spicy kick.