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Slice of overnight French toast on a plate.
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5 from 1 vote

The Best Overnight French Toast Casserole Recipe

This is The BEST Overnight French Toast recipe you'll ever have! Made with thick slices of soft bread that have been soaked over night in a rich custard of eggs, cream and vanilla and topped with a sweet crumble topping just before baking. After soaking in the custard, the bread becomes incredibly moist and tender, creating a truly decadent breakfast treat!
Prep Time10 minutes
Cook Time45 minutes
Refrigerate overnight or minimum 4 hours4 hours
Course: Breakfast
Servings: 8
Author: Jessica

Ingredients

French Toast Casserole

  • 12-15 slices of bread thickly sliced brioche or white bread
  • 6 large eggs
  • 2 cups whole milk
  • ½ cup heavy cream
  • ¾ cup granulated sugar
  • 1 teaspoon cinnamon
  • 2 tbs vanilla extract

Crumble Topping

  • 1 cup flour plus up to ¼ cup more if needed
  • ½ cup brown sugar
  • 1 teaspoon cinnamon
  • pinch salt
  • ½ cup cold butter cut into tiny chunks

Instructions

  • Grease a 9x13 pan very lightly with non-stick cooking spray. Set aside.
  • Cut bread slices into 1 inch chunks and stagger them in the prepared baking dish as even as possible. You may need more or less bread to fill your pan depending on thickness/size.
  • In a large bowl or measuring cup, whisk eggs, milk, heavy cream, sugar, cinnamon and vanilla together very well until combined. Pour custard mixture evenly over bread pieces trying to moisten every piece as well as you can. Tightly cover with plastic wrap and store in the refrigerator over night.
  • To make the crumble topping, whisk together flour, brown sugar, cinnamon and salt in a medium bowl. Cut in butter until a coarse meal consistency is achieved. Either cover the bowl with saran wrap or place the mixture into a resealable bag to store in the refrigerator overnight with the pan of french toast.
  • In the morning, preheat your oven to 350 degrees. Uncover the french toast and evenly distribute the crumble on top.
  • Bake for 45 minutes - 1 hour depending on how gooey and custard-like you want the center to be.
  • Once done, serve warm with maple syrup or even just a sprinkle of confectioner's sugar on top.

Notes

  • Storing Instructions: This Overnight French Toast will keep for up to 5 days stored in the refrigerator in an airtight container.