Eggnog French Toast Casserole is a cozy breakfast treat that feels like a holiday hug in every bite. It’s made with thick slices of bread soaked in a creamy, eggnog-flavored custard, then baked until golden and perfectly soft inside with a slightly crispy top. The subtle spice from cinnamon and nutmeg adds a warm touch that makes it feel extra special.
I love making this casserole for brunch when I want something that feels festive but is still easy to prepare. The night before, I soak the bread so all the flavors have time to mingle, and in the morning, I just pop it in the oven while I get ready. It fills the whole house with the smell of the holidays, and I always find myself sneaking a warm piece before everyone else wakes up!
Serving it with a drizzle of maple syrup or a dusting of powdered sugar makes it even better. I like pairing it with fresh fruit or a cup of strong coffee to balance the sweetness. This dish always brings smiles around the table and makes me feel like the holidays are right there, even on an ordinary morning.
Key Ingredients & Substitutions
Bread: Brioche or challah is best because they’re soft and absorb custard well. If you can’t find these, thick-cut white bread or even croissants work well. Avoid super dense breads like sourdough unless toasted first.
Eggnog: This gives the dish its special flavor. Store-bought is fine, but homemade will taste richer. If you prefer less richness, replace half the eggnog with milk.
Spices: Cinnamon and nutmeg add warmth. Freshly grated nutmeg tastes best, but ground is easier and still tasty. Feel free to adjust amounts to your taste.
Vanilla Extract: A small splash boosts flavor depth. If you don’t have vanilla, a pinch of almond extract is a nice alternative.
How Can I Make Sure the Bread Soaks Up All the Custard Without Getting Soggy?
The soaking step is key to fluffy, flavorful French toast casserole. Here’s what I do:
- Cut the bread into cubes about 1-2 inches – big enough to hold custard and keep some texture.
- Pour the custard evenly over the bread and gently press down to help absorption.
- Cover and refrigerate for at least 2 hours, but overnight is even better. This gives the bread time to soak without becoming mushy.
- Before baking, don’t stir or mix – keep the soaked bread piled up to bake into soft but slightly firm pockets.
This slow soaking helps the custard pull into each piece while keeping the texture nice once baked.
Equipment You’ll Need
- 9×9 inch baking dish – I like this size because it fits the bread evenly and bakes up nicely.
- Mixing bowls – for whisking the custard ingredients; a large one makes it easier.
- Whisk – keeps everything smooth and well combined.
- Knife and cutting board – to cube the bread neatly.
- Measuring cups and spoons – for precise ingredient amounts.
- Plastic wrap – to cover and refrigerate overnight.
Flavor Variations & Add-Ins
- Use croissants or cinnamon rolls instead of bread for extra richness and flavor.
- Top with chopped nuts or toasted coconut before baking for crunch.
- Mix in dried fruits like cranberries or raisins into the bread before soaking.
- Add a splash of rum or whiskey to the custard for a boozy twist, perfect for adult gatherings.
Eggnog French Toast Casserole
Ingredients You’ll Need:
Main Ingredients:
- 1 loaf of thick bread (brioche or challah), cut into cubes (about 6-8 cups)
- 4 large eggs
- 2 cups eggnog (store-bought or homemade)
- 1/4 cup milk
- 1/3 cup granulated sugar
- 1 teaspoon vanilla extract
- 1/2 teaspoon ground cinnamon
- 1/4 teaspoon ground nutmeg
- Pinch of salt
- Butter (for greasing the baking dish)
For the Topping/Glaze:
- 1/2 cup powdered sugar
- 1-2 tablespoons eggnog (adjust for drizzle consistency)
- Optional: Cinnamon sugar (1 tbsp sugar + 1 tsp cinnamon) for sprinkling before baking
Time Needed
This recipe takes about 15 minutes to prepare, plus at least 2 hours (or overnight) of soaking time in the fridge. Baking takes another 40-45 minutes. Plan ahead so the bread soaks up all the delicious eggnog custard!
Step-by-Step Instructions:
1. Prepare Your Baking Dish and Bread:
Preheat your oven to 350°F (175°C). Grease a 9×9 inch or similarly sized baking dish with butter. Cut the bread into cubes and spread them evenly in the dish.
2. Make the Eggnog Custard:
In a large bowl, whisk together the eggs, eggnog, milk, sugar, vanilla extract, cinnamon, nutmeg, and a pinch of salt until smooth and fully mixed.
3. Soak the Bread:
Pour the eggnog mixture evenly over the bread cubes, gently pressing down so the bread soaks up the custard. If you like, sprinkle the cinnamon sugar on top for a sweet crust. Cover the dish with plastic wrap and refrigerate for at least 2 hours, but overnight is best for full flavor absorption.
4. Bake the Casserole:
Remove the casserole from the fridge and take off the plastic wrap. Bake uncovered in the preheated oven for 40-45 minutes, or until the top is golden brown and the custard is set.
5. Prepare and Add the Glaze:
While the casserole bakes, whisk the powdered sugar with enough eggnog to make a smooth drizzle. Once the casserole is out of the oven and has cooled for about 5-10 minutes, drizzle the glaze over the top.
6. Serve and Enjoy:
Serve your eggnog French toast casserole warm, with optional sides like maple syrup, fresh fruit, or whipped cream. It’s perfect for cozy holiday mornings or any time you want a festive treat!
Can I Use Frozen Bread for This Casserole?
Yes! Just make sure to thaw the bread completely before cutting it into cubes. Using slightly stale or day-old bread also works great because it absorbs the custard better without getting too soggy.
How Long Can I Store Leftovers?
Store any leftover casserole in an airtight container in the refrigerator for up to 3 days. Reheat individual portions in the microwave or oven until warmed through.
Can I Make This Recipe Dairy-Free?
Absolutely! Substitute the eggnog and milk with dairy-free alternatives like almond or coconut milk eggnog. Just keep in mind the flavor will be slightly different but still delicious.
Can I Prep This Casserole Ahead of Time?
Definitely! The casserole can be assembled and refrigerated overnight before baking. This makes it perfect for busy mornings or holiday brunches—just pop it in the oven when you’re ready to serve.