Eggnog French Toast Casserole is a cozy morning treat that feels like a holiday hug in every bite. This dish is full of soft, custardy bread soaked in rich eggnog, then baked until golden and puffed up with a lightly sweet, cinnamon-spiced flavor. It’s a perfect way to take classic French toast and turn it into a comforting brunch everyone will love.
I love making this casserole when friends or family are coming over because it’s mostly hands-off once everything is layered in the dish. Plus, the scent of eggnog and warm spices baking in the oven fills the whole house with that special holiday vibe. If you want to add a little extra something, I sprinkle chopped pecans or a drizzle of maple syrup on top before serving—it’s a nice touch that everyone always asks about.
Serving this with some fresh fruit or a simple dusting of powdered sugar really brightens it up and makes it feel like a complete breakfast celebration. It’s one of those recipes that feels special but comes together easily, so I keep it in my rotation whenever I want to treat myself or the people I care about. Eggnog French Toast Casserole is just the kind of warming, sweet start to the day that makes me smile every time.
Key Ingredients & Substitutions
Bread: Day-old brioche or challah are best for soaking up the custard without getting mushy. If unavailable, use French or Italian bread. Just avoid very soft sandwich bread, which can turn soggy.
Eggnog: This is the star here, adding rich flavor and sweetness. You can use traditional eggnog or a dairy-free version if needed. For less sweetness, try half eggnog, half milk.
Spices (Cinnamon & Nutmeg): These warm spices bring holiday vibes. If you don’t have nutmeg, all cinnamon works fine, or add a dash of ground cloves or ginger for a twist.
Butter: Melted butter helps add richness to the custard. You can substitute with coconut oil or a dairy-free butter if desired.
Glaze: Powdered sugar and milk make a simple glaze that’s easy to pour. Use any milk or cream substitute, like almond or oat milk, to keep it dairy-free.
How Do You Get the Perfect Custardy Texture Without a Soggy Bottom?
The key is letting the bread soak up the eggnog-egg mixture evenly, then baking until just set. Here’s how I do it:
- Grease your baking dish well to prevent sticking.
- Pour custard slowly and gently press bread to soak it in better, but don’t mash it.
- Let the casserole rest 10-15 minutes before baking — this helps the custard sink into the bread.
- Bake uncovered so the top crisps and gets golden brown, while the inside stays soft.
- Check with a toothpick: it should come out mostly clean but with a slight moistness—this means custard is set but still soft.
Equipment You’ll Need
- 9×9-inch baking dish – I recommend a simple dish that cooks evenly and fits the portion size well.
- Mixing bowls – for whisking the custard ingredients; a large one makes it easier to combine everything smoothly.
- Whisk or fork – helps mix the eggs, eggnog, and spices until smooth; I prefer a whisk for quick blending.
- Measuring cups and spoons – keeps your ingredients precise, especially with sugar and spices.
- Plastic wrap or foil – to cover the dish if chilling the casserole beforehand or keeping leftovers fresh.
- Drizzle spoon or small spatula – for pouring the glaze evenly over the casserole once it’s baked.
Flavor Variations & Add-Ins
- Swap bread: Try croissants or cinnamon rolls for a richer, more decadent texture.
- Add-ins: Mix in chopped pecans or walnuts for crunch, or fold in cooked apple slices for extra fruitiness.
- Spice it up: Add a pinch of ground cloves, ginger, or allspice to enhance seasonal flavors.
- Glaze variations: Use cream cheese frosting or top with a dusting of cinnamon sugar instead of the powdered sugar glaze for different finishes.
Eggnog French Toast Casserole
Ingredients You’ll Need:
- 1 loaf (about 10-12 slices) day-old bread, cut into 1-inch cubes (brioche or challah works well)
- 4 large eggs
- 2 cups eggnog
- 1/4 cup granulated sugar
- 1 teaspoon vanilla extract
- 1 teaspoon ground cinnamon
- 1/4 teaspoon ground nutmeg
- Pinch of salt
- 2 tablespoons unsalted butter, melted, plus more for greasing pan
- 1 cup powdered sugar, for the glaze
- 2 tablespoons milk or cream, for the glaze
- Optional: maple syrup, for serving
How Much Time Will You Need?
This casserole takes about 15 minutes to prepare, 45-50 minutes to bake, plus a few minutes for glazing and cooling—so roughly an hour and a bit from start to finish.
Step-by-Step Instructions:
1. Prepare the Baking Dish and Bread:
Preheat your oven to 350°F (175°C). Butter a 9×9-inch casserole dish to prevent sticking. Spread your cubed bread evenly in the dish.
2. Make the Eggnog Custard Mixture:
In a large bowl, whisk together the eggs, eggnog, sugar, vanilla, cinnamon, nutmeg, salt, and melted butter until smooth and combined.
3. Soak the Bread:
Pour the eggnog mixture evenly over the bread cubes. Gently press the bread with a spatula to help soak up the custard. Let the casserole sit for about 10-15 minutes so the bread absorbs the liquid.
4. Bake:
Bake the casserole uncovered for 45-50 minutes. The top should be golden brown and the custard set. You can check by inserting a toothpick into the center—it should come out mostly clean.
5. Prepare the Glaze:
While the casserole bakes, mix the powdered sugar with milk or cream in a small bowl until smooth and pourable.
6. Finish and Serve:
Let the casserole cool for 5-10 minutes after baking. Drizzle the glaze generously across the top. Serve warm, optionally with maple syrup or fresh fruit on the side.
Can I Use Frozen Bread for This Casserole?
Yes! Just make sure to thaw the bread completely before cubing it. Using day-old or slightly stale bread works best for soaking up the custard without getting too soggy.
Can I Prepare This Casserole the Night Before?
Absolutely. Assemble the casserole, cover it tightly, and refrigerate overnight. Bake it fresh in the morning—just add a few extra minutes to the baking time if it’s cold straight from the fridge.
How Should I Store Leftovers?
Store leftover casserole in an airtight container in the fridge for up to 3 days. Reheat gently in the microwave or oven to keep it moist and delicious.
Can I Make This Recipe Dairy-Free?
Yes! Use dairy-free eggnog and substitute butter and milk in the glaze with plant-based alternatives like coconut oil and almond or oat milk.