Overnight Eggnog French Toast Casserole Recipe

Name: Overnight Eggnog French Toast Casserole
Prep time: 20 min
Cook time: 55 min
Total time: 75 min
Yield: 8
Cuisine: American
Ingredients: 1 loaf (16 oz) French bread, stale and cubed; 2 cups eggnog; 4 large eggs; 1/4 cup granulated sugar; 1 tsp vanilla extract; 1/2 tsp ground nutmeg; 1/2 tsp cinnamon; 1 pinch salt; 1/2 cup brown sugar, packed; 1/2 cup all-purpose flour; 1/2 cup (1 stick) cold unsalted butter, cubed

I’ll never forget the first time I tried making this Overnight Eggnog French Toast Casserole Recipe. It was Christmas morning, and I was so proud of myself for planning ahead. I threw it together the night before, popped it in the oven the next day, and served it to my whole family. It came out completely soupy in the middle. My brother, bless him, took a bite and said, “It’s… very liquidy.” We ended up eating cereal. But I was determined to get it right, and now it’s our favorite holiday tradition, even if it took a few disasters to get here.

Recipe Card

Recipe Title	Overnight Eggnog French Toast Casserole Recipe
Servings	8
Prep Time	20 minutes (plus overnight rest)
Cooking Time	50-60 minutes
Calories	approx. 420 per serving

Ingredients

1 loaf (about 16 oz) French bread, stale and cubed
2 cups eggnog
4 large eggs
1/4 cup granulated sugar
1 tsp vanilla extract
1/2 tsp ground nutmeg, plus more for topping
1/2 tsp cinnamon
Pinch of salt
1/2 cup brown sugar, packed
1/2 cup all-purpose flour
1/2 cup (1 stick) cold unsalted butter, cubed

That loaf of French bread is key. One time I used soft, fresh sandwich bread because it’s all I had. Big mistake. It turned into a total mushy, unidentifiable blob. You really need that sturdy, stale bread to soak up all that rich eggnog custard without falling apart. Trust me on this one.

Directions

Grease a 9×13 inch baking dish really well with butter or cooking spray.
Spread your cubed, stale bread evenly in the prepared dish.
In a large bowl, whisk together the eggnog, eggs, granulated sugar, vanilla, nutmeg, cinnamon, and salt until it’s totally smooth.
Pour this mixture evenly over the bread cubes in the dish.
Press the bread down gently with a spatula or your hands to make sure every piece gets soaked.
Cover the dish tightly with plastic wrap and refrigerate it overnight, or for at least 8 hours.
The next morning, preheat your oven to 350°F (175°C).
Take the dish out of the fridge and let it sit on the counter while you make the topping.
In a medium bowl, mix the brown sugar, flour, and cold cubed butter. Use a pastry cutter or your fingers to mix it until it looks like coarse crumbs.
Sprinkle this crumb topping evenly over the soaked bread.
Bake for 50-60 minutes, or until the top is golden brown and the center is set.
Let it cool for about 10 minutes before serving. Dust with a little extra nutmeg if you like.

The “press the bread down” step is where I messed up for years. I’d just pour the custard over and shove it in the fridge. The top layer would be dry and crunchy while the bottom was a swamp. Now I really get in there and press it all down. It feels weird, like you’re squishing it too much, but it makes sure every single cube gets love. No more dry bits!

I love this Overnight Eggnog French Toast Casserole Recipe because it’s the ultimate comfort food for a crowd. It makes the whole house smell like holiday spirit, and it’s such an easy dinner (or breakfast!) to throw together when you have people staying over. The leftovers, if you have any, reheat surprisingly well in the toaster oven.

My biggest mistake was always pulling it out too early. I’d see the top getting brown and think it was done, only to cut into a raw, eggy center. Now I use a knife to check the center—if it comes out clean, we’re good. If it’s wet, it goes back in for another five minutes. No one wants undercooked eggnog surprise.

Next time, I might try a healthy swap and use a whole grain bread, just to see what happens. I’m a little scared it’ll change the texture, but it’s become such a family favorite that I’m willing to experiment. Maybe I’ll use half eggnog and half milk to cut the richness a tiny bit.

Nutrition Info (per serving)

Calories	Carbs	Fat	Protein
420	55g	18g	10g

Okay, so this Overnight Eggnog French Toast Casserole Recipe is not exactly a health food. The numbers always surprise me a little, but it’s a holiday treat! I have made it lighter by using low-fat eggnog once, and honestly, it was fine. The texture was still great. If you’re watching sugar, you could probably reduce the sugar in the custard a bit, but the topping is non-negotiable for that crunch.

Ingredient Swaps

Ingredient	Substitution
French Bread	Challah or Brioche
Eggnog	2 cups milk + 1 extra egg + extra nutmeg
Nutmeg	Pumpkin Pie Spice
Butter (in topping)	Coconut Oil

I’ve tried a bunch of these swaps. The challah bread is amazing, it makes it even richer. The milk-and-egg swap for eggnog works in a pinch, but you really miss that signature eggnog flavor. Using coconut oil in the topping was a fail for me—it made the topping kind of greasy and didn’t crisp up the same way. Stick with butter if you can!

Tips

Your bread MUST be stale. Leave the cubes out on a baking sheet for a few hours or even overnight.
Don’t skip the step of letting the dish sit on the counter before baking. It takes the chill off and helps it bake evenly.
If the top is browning too fast, just lay a piece of aluminum foil loosely over the top for the rest of the bake time.

I learned the hard way about the stale bread, like I said. But the counter tip was another lesson. I baked it straight from the fridge once and the center was still cold and underdone after an hour, while the edges were burnt. Letting it sit for 20-30 minutes makes a world of difference. I wish I knew that earlier instead of serving a few charcoal-edged, cold-centered casseroles!

FAQ

Can I make this without letting it sit overnight?
You can, but it won’t be as good. I tried it once when I forgot to prep it. I only let it soak for an hour. The bread cubes on the bottom were soggy, but the ones on top were still dry. The overnight soak is what makes it magical and consistent throughout.

My topping melted into a glaze instead of staying crumbly. What did I do wrong?
Oh, I’ve done this! Your butter was probably too soft. The butter for the topping needs to be really cold. If it’s soft or melted, it just makes a sweet paste that sinks in and melts. Cold butter is the secret to that perfect, crunchy streusel-like top.

Can I freeze this after baking?
Yes! I let it cool completely, then cut it into portions and wrap them tightly in plastic wrap and foil. To reheat, I pop a frozen square in the toaster oven or a 350°F oven until it’s warm all the way through. It’s not *quite* as perfect as fresh, but it’s a lifesaver for a quick breakfast later.

That’s everything I know about making Overnight Eggnog French Toast Casserole Recipe! Hope you give it a try, and if you mess it up, you’re in good company—I do it all the time.