Can I make this casserole ahead of time?
Yes—that's the point. Assemble the casserole, cover, and refrigerate overnight (or up to 24 hours). Bake the next morning as directed.
What bread can I substitute for Hawaiian bread?
Challah, brioche, or thick-cut white bread work well. Avoid thin sandwich bread, which absorbs too much custard and becomes mushy.
How do I know when the casserole is done baking?
The custard should be set but still slightly jiggly in the center, and the top should be golden. A toothpick inserted into the bread should come out with moist crumbs, not raw custard.
Can I double this recipe?
Yes. Use two loaves of Hawaiian bread and double the custard mixture. You may need to increase baking time by 10–15 minutes depending on your dish size.
What's the difference between evaporated milk and regular milk?
Evaporated milk is concentrated and adds richness and body to the custard. Regular milk won't create the same creamy texture; use heavy cream to compensate if substituting.