This Traditional French Toast Casserole is a classic, comforting breakfast made with buttery bread, warm cinnamon, and a rich custard base. Baked until golden with a soft, custardy center and lightly crisp edges, it’s an easy dish that’s perfect for weekends, holidays, or feeding a hungry crowd.
1 loaf brioche, challah, or French bread, cut into 1-inch cubes
6 large eggs
2 cups whole milk
½ cup granulated sugar
1 tablespoon vanilla extract
1 teaspoon ground cinnamon
¼ teaspoon salt
½ cup unsalted butter, melted
Preheat the Oven
Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish with butter or nonstick spray.
Prepare the Bread
Spread the bread cubes evenly in the prepared baking dish.
Make the Custard
In a large bowl, whisk together the eggs, milk, sugar, vanilla, cinnamon, and salt until smooth.
Assemble
Pour the egg mixture evenly over the bread, gently pressing the bread down so it absorbs the custard. Drizzle the melted butter evenly over the top.
Soak
Let the casserole sit for 10 minutes to allow the bread to soak up the liquid.
Bake
Bake uncovered for 40 minutes, or until the top is golden brown and the center is set.
Serve
Let cool slightly before serving. Serve warm with maple syrup, powdered sugar, or fresh berries.
Best bread: Slightly stale bread absorbs the custard best.
Richer flavor: Substitute part of the milk with half-and-half or cream.
Extra spice: Add a pinch of nutmeg for warmth.
Make-ahead: Assemble the night before, cover, and refrigerate. Bake in the morning.