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Golden brown overnight French toast casserole in a glass baking dish topped with cinnamon

Overnight French Toast

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Prep Time 15 minutes
Cook Time 45 minutes
Total Time 9 hours
Servings 8 servings
Calories 385 kcal

Ingredients
  

  • 16 ounces brioche or challah bread, cut into 1-inch cubes
  • 8 large egg s
  • 2 cups whole milk
  • 0.5 cups heavy cream
  • 0.75 cups granulated sugar
  • 2 tablespoons vanilla extract
  • 1 teaspoon ground cinnamon
  • 0.25 teaspoon ground nutmeg
  • 0.25 teaspoon kosher salt
  • 1 tablespoon unsalted butter, for greasing

Instructions
 

  • Thoroughly coat a 9x13 inch baking dish with unsalted butter.
  • Distribute the bread cubes evenly across the bottom of the prepared dish.
  • In a large mixing bowl, whisk the eggs, milk, heavy cream, sugar, vanilla, cinnamon, nutmeg, and salt until the mixture is fully emulsified and the sugar has partially dissolved.
  • Pour the custard mixture over the bread cubes, ensuring every piece is coated.
  • Press down lightly on the bread to facilitate absorption, then cover the dish tightly with plastic wrap.
  • Refrigerate the dish for a minimum of 8 hours, or up to 24 hours, to allow the bread to fully hydrate.
  • Preheat a conventional oven to 350°F (177°C) and remove the dish from the refrigerator to sit at room temperature for 20 minutes.
  • Remove the plastic wrap and bake the casserole for 45 to 50 minutes, or until the custard is set and the top is golden brown.
  • Allow the dish to rest for 5 to 10 minutes at room temperature before slicing and serving.