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Overnight Birthday Cake French Toast Casserole

Overnight Birthday Cake French Toast Casserole

  • Author: Lindsay
  • Prep Time: 25 mins
  • Cook Time: 45 mins
  • Total Time: 1 hour 10 minutes
  • Yield: 10-12 Servings 1x
  • Category: Breakfast
  • Method: Oven
  • Cuisine: American


The best overnight french toast casserole – made with cake mix! The perfect easy breakfast for a birthday or celebration!




  • 1 loaf Sourdough Or French Bread, cut into chunks
  • 8 large eggs
  • 2 1/2 cups (600ml) milk
  • 1/2 cup (120ml) heavy whipping cream
  • 2 cups Funfetti cake mix
  • 2 tsp ground cinnamon
  • 2 tsp vanilla extract
  • 5 tbsp sprinkles


  • 1 cup Funfetti cake mix
  • 1/2 cup (112g) salted butter, cut into pieces


  • Rainbow Chip Frosting or Maple Syrup


1. Grease a 9×13 inch casserole dish.
2. Add the bread chunks to a large bowl and set aside.
3. In another large bowl, whisk together the eggs, milk, cream, cake mix, cinnamon and vanilla extract.
4. Pour the egg mixture over the bread chunks, then gently stir to combine.
5. Pour the bread mixture into the prepared casserole dish and spread evenly. Spread the sprinkles evenly over the top of the casserole. Cover the casserole and store in the fridge overnight.
6. When ready to bake the casserole, preheat the oven to 350°F (176°C).
7. Bake the casserole for about 25-30 minutes. While the casserole bakes, cut the additional cake mix into butter for the topping until it’s crumbly.
10. Remove the casserole from the oven and crumble the streusel over the top of the casserole.
11. Continue baking the casserole for another 10-25 minutes, or until it’s at your desired level of doneness.
12. Serve the casserole warm with frosting or syrup. To use the frosting, heat it in the microwave until pourable.

Keywords: overnight birthday cake french toast casserole, french toast bake, birthday breakfast, breakfast casserole