This is a strata, so day-old good bread and real sausage matter more than any seasoning. The single technique that saves it: let the assembled dish soak overnight so the bread drinks up the custard and bakes into one tender whole.
By Vince Gonzalez · Published July 2026 · Sourcing verified 5 Jul 2026
Prep20 min
Cook50 min
Makes8 servings
CuisineAmerican
Cost$$
Contains dairy · eggs · gluten
Make it gluten-free: swap in gluten-free versions of the wheat items (check the other labels too).
Rich enough that Mom might raise an eyebrow. · plan ahead — needs marinating, soaking, or resting time
EffortSome doing
Cook it with
Sheet pan
The Method
Brown the sausageCook the sausage until well browned and crumbled, then drain. Browning is where the flavor lives.
Layer and soakToss bread, sausage, and half the cheese in a buttered dish, pour the egg-milk custard over, and press down. Cover and refrigerate overnight.
BakeTop with the rest of the cheese and bake at 350F until the center is set and puffed, about 50 minutes. Rest ten minutes before cutting.
Can you make Breakfast Casserole in an air fryer? — Sometimes
You can, but a custard needs gentle, even heat and usually a water bath the basket can’t give, so the top tends to set before the middle. Bake it in ramekins that fit and watch closely, or use the oven for a foolproof set.
Can you freeze Breakfast Casserole? — Not ideal
Not really — the cream, custard, or emulsion turns grainy or splits once thawed. This one is best kept fresh in the fridge.
Can you make Breakfast Casserole ahead of time? — Yes
Yes — it holds well and often tastes better the next day. Make it ahead and reheat gently before serving.
Is Breakfast Casserole gluten-free? — Not as written
Not as written — it contains gluten. Make it gluten-free: swap in gluten-free versions of the wheat items (check the other labels too).
Is Breakfast Casserole vegan? — No
No — it contains meat, so it isn’t vegetarian or vegan.
Community Notes
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