A nostalgic, homestyle casserole that layers slices of buttered bread with generous handfuls of shredded cheese, then envelopes them in a savory, seasoned custard before baking to golden perfection. This dish evokes classic comfort, ideal for family meals or communal gatherings.
¼teaspoonground mustard powderoptional, for added depth
¼teaspoonground black pepper
1small onionfinely diced (optional)
½teaspoonfine salt
Instructions
Coat one side of each bread slice with a thin layer of softened butter.
Place 6 of the buttered slices into a lightly greased 9x13-inch baking dish, arranging them with the buttered side facing downward.
Evenly scatter 1 cup of the grated cheese across the bread layer. If using, sprinkle the chopped onion over the cheese.
Lay the remaining 6 slices of bread on top of the cheese, this time with the buttered sides facing up.
Distribute the remaining cup of shredded cheese over the upper bread layer.
In a separate mixing bowl, whisk together the milk, eggs, salt, black pepper, and ground mustard until well combined and smooth.
Gently pour the egg mixture over the layered bread and cheese, ensuring even coverage throughout the dish.
Allow the casserole to rest at room temperature for 10 minutes so the bread can absorb the liquid custard.
Transfer to a preheated oven set at 350°F (175°C) and bake uncovered for 30 to 35 minutes, or until the center is firm and the top develops a golden crust.
Remove from oven and allow the casserole to rest for 5 minutes before cutting into squares and serving.
The inclusion of mustard and onion is optional but recommended for a deeper flavor profile. This dish is best served warm and can be prepared in advance for convenience.