Pour this mixture into a greased (olive oil) 13 X 9" pyrex baking dish (this doesn't have to be pretty- it won't show much when baked and sliced- taste is everything!).
04Press down with palms of hands to compact somewhat. Carefully pour 1/4 cup water over top.
05Bake for about 1 hour and 20 minutes. (if boureki appears to be too dry during baking, you can add up to 1/4 cup more water - but careful, the zucchini and potatoes will also release liquid during baking).