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Overnight S'mores French Toast Casserole | Perfect for a holiday breakfast or brunch, sourdough bread is mixed with chocolate chips, marshmallows and graham crackers, then baked up into pure French toast perfection! | https://thechunkychef.com | #frenchtoast #breakfast #brunch #casserole
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5 from 1 vote

Overnight S'mores French Toast Casserole

This French toast casserole is made with chocolate milk, and studded with chocolate chips and mini marshmallows, then topped with crushed graham crackers!
Prep Time10 mins
Cook Time25 mins
Total Time35 mins
Course: Breakfast
Cuisine: American
Servings: 8 servings
Calories: 376kcal
Author: Amanda


  • 12 oz day old sourdough or French bakery bread
  • 5 large eggs
  • 1 1/4 cups Promised Land Dairy Midnight Chocolate Milk
  • 2 Tbsp granulated sugar
  • 1 tsp vanilla extract
  • 1 cup chocolate chips (any variety)
  • 1 cup mini marshmallows
  • 1/4 cup crushed graham crackers
  • powdered sugar, for dusting


  • Spray a 2 or 3 quart baking dish with nonstick cooking spray.  Set aside.
  • Use a serrated bread knife to cube bread into bite-sized pieces, about 1 inch squares.  Add bread cubes to prepared baking dish.  
  • Sprinkle with most of the chocolate chips, marshmallows and crushed graham crackers, reserving some of each for later.
  • In a mixing bowl, add eggs, chocolate milk, sugar and vanilla.  Whisk to combine well, and pour mixture over bread cubes.  
  • Carefully stir up the mixture of bread cubes, chocolate chips, marshmallows and graham crackers.  
  • To the top of the bread, add the remainder of the chocolate chips, marshmallows and crushed graham crackers.
  • Cover dish tightly with foil and refrigerate overnight.
  • Preheat oven to 350 F degrees.  Remove casserole from refrigerator and let sit on counter to warm up.
  • Bake for 25-30 minutes, until golden brown.  Dust with powdered sugar and drizzle with maple syrup if desired.


My loaf of sourdough bread is 16 oz, so I use 3/4 of the loaf and use the rest for some amazing grilled cheese sandwiches!


Calories: 376kcal