Overnight Sourdough French Toast Casserole Recipe

This overnight sourdough french toast casserole recipe is the perfect make-ahead breakfast. Don’t let your sourdough bread go to waste. Use it in this easy casserole. 

This dish is a winner in my home because it combines two of our favorite things; sourdough bread and breakfast! Although my family enjoys pancakes and cinnamon rolls, this recipe is top of my list because of the make-ahead instructions. 

sourdough french toast casserole

Why You’ll Love This Recipe

There are so many reasons to love this make ahead french toast casserole recipe! It’s a crowd-pleasing breakfast dish that’s perfect for a Sunday morning, holiday breakfast, or even an Easter brunch. You’ll love how easy it is to mix a few simple ingredients at night before bed and know that the next day you’ll have a delicious breakfast on the table. The crispness of the crumble topping with the soft and warm inside is the perfect texture combination and there is just enough sweetness to make each bite a treat. 

sourdough french toast casserole

Ingredients for Sourdough French Toast Casserole

  • Homemade sourdough bread: Of course, you can purchase bread already baked BUT it’s my opinion that sourdough is the best bread for this breakfast bake. Plus you’ll know it’s made with simple quality ingredients. You can grab the recipe for an easy sourdough loaf here
  • Eggs: If you follow along on Instagram then you already know we have a small flock of backyard chickens we adore. They give us more eggs than we can eat so this recipe is a great way to use a lot of eggs at once. 
  • Whole milk & heavy cream: The perfect milk mixture for this casserole. 
  • Sugar & brown sugar
  • Vanilla extract
  • Flour: Unbleached all-purpose
  • Cinnamon
  • Butter: Do yourself a favor and use real butter, not the fake stuff. 
  • Maple Syrup

How to Make Sourdough French Toast Casserole

This recipe really is so simple to throw together at night before bed and the next morning you’ll just add the crumb topping a pop it in the oven. 

1. Start by slicing your sourdough loaf into 1-inch cubes. Toss your bread cubes into a greased 9×13-inch casserole dish.

2. In a large bowl add eggs, milk, heavy cream, sugar, brown sugar, and vanilla. Stir. 

3. Pour the mixture over the bread. Cover and refrigerate overnight. 

4. The next morning, preheat your oven to 350° and prepare the crumble by mixing sugar, brown sugar, flour, and cinnamon. Cut in butter and sprinkle on top of the bread and egg mixture. 

5. Bake for 45 minutes in a preheated oven or until golden brown. 

6. Serve with a drizzle of maple syrup on top!

Variations

Change up this easy french toast casserole recipe with these delicious twists:

  • Add orange zest, and fresh berries, or swap the cinnamon for pumpkin spice! 
  • You can also swap the milk mixture for almond milk or even coconut milk.
  • Make a cream cheese mixture of cream cheese, powdered sugar, and vanilla, and add dollops to the casserole before baking. 

How to Store Leftovers

This easy breakfast recipe makes a large amount and you may find yourself with leftovers for another day. Once your french toast casserole is cooled completely you should cover your baking dish with plastic wrap or place in an airtight container and store in the refrigerator. 

How to Reheat 

When you’re ready to reheat, cover your dish with aluminum foil and bake at 350° until heated through, or pop it in the microwave. 

What to Serve with French Toast Casserole 

This overnight french toast casserole is a meal on its own but I love to serve it with a side of fresh fruit or breakfast meat like bacon or sausage. 

Overnight Sourdough French Toast Casserole

This overnight sourdough french toast casserole recipe is the perfect make-ahead breakfast.
Prep Time 10 minutes
Cook Time 45 minutes
Overnight Soak 8 hours
Servings 8

Ingredients

French Toast

  • 1 loaf Sourdough bread
  • 8 eggs
  • 1 cup whole milk
  • 1 cup heavy cream
  • 1/2 cup sugar
  • 1/4 cup brown sugar
  • 2 Tbsp vanilla

Crumble

  • 1/2 cup sugar
  • 1/2 cup brown sugar
  • 2/3 cup flour
  • 3 tsp cinnamon
  • 1/4 cup butter

Instructions

  • Start by slicing your sourdough loaf into 1-inch cubes. Toss your bread cubes into a greased 9×13-inch casserole dish.
  • In a large bowl add eggs, milk, heavy cream, sugar, brown sugar, and vanilla. Stir.
  • Pour the mixture over the bread. Cover and refrigerate overnight.
  • The next morning, preheat your oven to 350° and prepare the crumble by mixing sugar, brown sugar, flour, and cinnamon. Cut in butter and sprinkle on top of the bread and egg mixture.
  • Bake for 45 minutes in a preheated oven or until golden brown.
  • Serve with a drizzle of maple syrup on top!

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