Bacon & Cheese Puff

This is a make-ahead breakfast casserole that you assemble the night before and bake in the morning. Quartered bread slices layered with crumbled bacon, softened onions, and shredded Swiss cheese, then soaked in a seasoned egg and milk custard. Overnight in the fridge, the bread absorbs the custard and the whole thing puffs up golden and set during baking.

Cooking the onions in the bacon drippings is the kind of move that adds flavor without adding ingredients. Those drippings carry all the smoky, salty bacon flavor right into the soft onions, which then get layered between the bread and cheese.

The custard is eight eggs whisked with four cups of milk, salt, pepper, and a dash of hot sauce. That hot sauce isn’t for heat; it’s for a subtle background warmth that wakes up the eggs and cheese. The ratio of custard to bread is generous, so every bite is custardy and soft, not dry and bready.

Pull it from the fridge an hour before baking to take the chill off, then 50 minutes in the oven gives you a puffed, golden top with a creamy interior.

Chef Tips

• Assemble the night before for the best results. The bread needs time to absorb the custard fully
• Let the casserole sit at room temperature for an hour before baking. Cold casserole bakes unevenly
• The center should be set and the top puffed and golden when it’s done. A slight jiggle in the very center is fine
• This halves easily for a smaller crowd: use an 8-inch square pan and bake for about 40 minutes

Variations

• Ham and cheddar: Swap the bacon for diced ham and use sharp cheddar instead of Swiss
• Veggie version: Replace bacon with sauteed mushrooms, spinach, and sun-dried tomatoes
• Everything bagel: Use cubed everything bagels instead of white bread for extra flavor and texture