You know that cozy fall morning feeling when everything just feels right?
This cinnamon apple french toast casserole brings exactly that vibe to your breakfast table. Chunks of bread soaking up cinnamon-spiced custard, sweet caramelized apples tucked throughout, and a golden crunchy top that smells like heaven.
I made this last weekend when my in-laws came to visit. Threw it together the night before, popped it in the oven while we had coffee, and honestly felt like the most put-together host ever. Zero stress.
The apples get all soft and jammy as they bake. The custard seeps into every corner of the bread. And that streusel topping? It creates this crispy, buttery layer that contrasts perfectly with the soft interior.
This isn’t your typical soggy french toast situation. This is next-level comfort food that feeds a crowd without you having to stand at the stove flipping individual slices.
Perfect for holiday mornings, lazy Sundays, or anytime you want breakfast that feels special but doesn’t require you to wake up at 5am.
What You’ll Need
For the Casserole:
- 1 loaf (16 oz) French bread or challah, cut into 1-inch cubes
- 8 large eggs
- 2 cups whole milk
- ½ cup heavy cream
- ⅓ cup granulated sugar
- ⅓ cup light brown sugar, packed
- 1 tablespoon vanilla extract
- 2 teaspoons ground cinnamon
- ½ teaspoon ground nutmeg
- ¼ teaspoon salt
- 3 medium Granny Smith apples, peeled and diced
- 2 tablespoons unsalted butter
- 2 tablespoons brown sugar (for the apples)
- ½ teaspoon cinnamon (for the apples)
For the Streusel Topping:
- ½ cup all-purpose flour
- ½ cup light brown sugar, packed
- 1 teaspoon ground cinnamon
- ¼ teaspoon salt
- 6 tablespoons cold unsalted butter, cubed
Pro Tips
Don’t skip the overnight soak. I know it’s tempting to rush this, but letting the bread soak for at least 4 hours (overnight is best) makes such a huge difference. The custard gets absorbed evenly and you won’t end up with dry spots.
Use slightly stale bread. Fresh bread gets too mushy. If your bread is fresh, leave it out uncovered for a few hours or toast the cubes lightly in the oven at 300°F for about 10 minutes. Day-old bread is perfect.
Cook the apples first. Raw apples release too much liquid and make the casserole watery. A quick 5-minute sauté caramelizes them slightly and removes excess moisture. Game changer.
Make the streusel ahead. You can prep the streusel topping up to a week in advance and keep it in the fridge. Just sprinkle it on right before baking.
Let it rest before serving. Give the casserole 10 minutes to set after it comes out of the oven. This helps it slice cleanly and keeps the custard from running all over your plate.
Tools You’ll Need
- 9×13 inch baking dish
- Large mixing bowl
- Medium skillet
- Whisk
- Small bowl (for streusel)
- Pastry cutter or fork
- Plastic wrap or aluminum foil
- Sharp knife
- Cutting board
Substitutions and Variations
Different breads: Brioche, sourdough, or even croissants work beautifully here. I’ve tried all three and each brings its own thing to the table.
Apple varieties: Honeycrisp adds extra sweetness, Fuji holds its shape well, or mix half Granny Smith with half Honeycrisp for a sweet-tart combo.
Dairy-free version: Swap the milk and cream for full-fat coconut milk or oat milk. Use plant-based butter for the topping. Still incredibly good.
Add pecans or walnuts: Toss ½ cup chopped nuts into the streusel for extra crunch and flavor.
Pumpkin spice twist: Replace the cinnamon and nutmeg with 2 tablespoons pumpkin pie spice for a fall-forward version.
Make it decadent: Drizzle with salted caramel sauce or maple glaze after baking. Cream cheese frosting also works if you’re feeling extra.
Berry version: Skip the apples and use 2 cups fresh or frozen blueberries instead. Reduce the cinnamon to 1 teaspoon.
Make Ahead Tips
This recipe was basically made for prepping ahead. Here’s what works:
Full make-ahead (recommended): Assemble the entire casserole the night before, cover tightly with plastic wrap, and refrigerate. Add the streusel topping right before baking. This actually improves the texture since the bread has more time to soak.
Streusel prep: Mix the streusel up to a week ahead and store it in an airtight container in the fridge.
Cooked apples: Sauté the apples up to 2 days ahead and keep them refrigerated.
Freezer option: Assemble the casserole completely (don’t bake), wrap it super well in plastic wrap and then foil, and freeze for up to 2 months. Thaw overnight in the fridge before baking. Add 5-10 minutes to the bake time if it’s still cold.
How to Make Cinnamon Apple French Toast Casserole
Prep the bread and pan. Cut your bread into roughly 1-inch cubes. You want them chunky so they don’t get too soggy. Grease your 9×13 baking dish really well with butter or cooking spray.
Cook the apples. Melt 2 tablespoons butter in a medium skillet over medium heat. Add the diced apples, 2 tablespoons brown sugar, and ½ teaspoon cinnamon. Cook for about 5 minutes, stirring occasionally, until the apples just start to soften. They’ll cook more in the oven so don’t overdo it here.
Make the custard. In a large bowl, whisk together the eggs, milk, heavy cream, both sugars, vanilla, cinnamon, nutmeg, and salt. Whisk until everything is completely smooth and the sugar has dissolved. This takes about a minute of good whisking.
Layer everything. Spread half the bread cubes in your prepared baking dish. Scatter half the cooked apples over the bread. Add the remaining bread cubes, then top with the rest of the apples. Pour the custard mixture evenly over everything. Press down gently with a spatula to make sure all the bread gets submerged.
Let it soak. Cover the dish tightly with plastic wrap and refrigerate for at least 4 hours or overnight. The bread needs this time to absorb all that custardy goodness.
Make the streusel. In a small bowl, mix the flour, brown sugar, cinnamon, and salt. Add the cold butter cubes and use a pastry cutter or fork to work the butter into the dry ingredients until you get coarse crumbs. It should look like wet sand.
Bake. When you’re ready to bake, preheat your oven to 350°F. Remove the casserole from the fridge and let it sit at room temperature for about 20 minutes. Uncover and sprinkle the streusel evenly over the top.
Bake for 45-55 minutes, until the center is set and doesn’t jiggle when you shake the pan gently. The top should be golden brown and crispy. If the top starts getting too dark, tent it loosely with foil.
Rest and serve. Let the casserole sit for 10 minutes before cutting into it. This helps everything set up nicely. Serve warm with maple syrup, powdered sugar, or a dollop of whipped cream.
Leftovers and Storage
Store any leftovers covered in the fridge for up to 4 days. It reheats really well.
To reheat: Microwave individual portions for 45-60 seconds, or reheat the whole thing covered with foil in a 325°F oven for about 20 minutes.
Freezing: You can freeze baked portions in individual containers for up to 2 months. Thaw overnight in the fridge and reheat.
The streusel might lose some of its crunch after storage, but the flavor is still there. If you want to crisp it back up, pop it under the broiler for 30 seconds (watch it carefully).
Nutritional Information
Per serving (based on 12 servings):
- Calories: 385
- Total Fat: 18g
- Saturated Fat: 10g
- Cholesterol: 165mg
- Sodium: 320mg
- Total Carbohydrates: 47g
- Dietary Fiber: 2g
- Sugars: 26g
- Protein: 9g
Keep in mind these are estimates and will vary based on the exact ingredients you use. Using different bread or milk alternatives will change the numbers.
Pairing Suggestions
This casserole is filling on its own, but here’s what works well alongside it:
Protein: Crispy bacon, breakfast sausage links, or turkey bacon balance out the sweetness.
Fresh fruit: A simple bowl of mixed berries or a fruit salad with mint keeps things light.
Drinks: Strong coffee, chai lattes, or fresh orange juice. Mimosas if it’s a special occasion 🥂
Savory balance: Scrambled eggs with cheese or a veggie frittata if you’re feeding people who want options.
FAQ
Can I use a different pan size? You can, but you’ll need to adjust the baking time. An 8×8 pan works for half the recipe. A larger pan means a thinner casserole that will bake faster, so start checking around 35 minutes.
Why is my french toast casserole soggy? Usually this means the bread didn’t have enough time to soak up the custard properly, you used too much liquid, or the bread was cut too small. Stick to 1-inch cubes and give it that overnight soak.
Can I make this without eggs? It’s tricky since eggs are what make the custard set. You could try a vegan egg replacer designed for baking, but I haven’t tested it personally so I can’t guarantee the texture.
What if I don’t have heavy cream? Just use all milk instead. It won’t be quite as rich, but it’ll still be delicious. You could also use half-and-half.
How do I know when it’s done? The center should be set and not jiggly. Insert a knife in the middle and it should come out mostly clean with just a few moist crumbs. The internal temperature should hit 160°F.
Can I skip the streusel topping? You can, but I wouldn’t recommend it. The crunch is such a nice contrast to the soft custard. If you’re avoiding butter or watching calories, you could do a light dusting of cinnamon sugar instead.
What bread works best? French bread, challah, or brioche are all excellent choices. Avoid soft sandwich bread as it gets too mushy. Sourdough works but has a slight tang that not everyone loves with the sweet flavors.
My apples turned brown. Is that okay? Totally fine. Once they’re mixed into the casserole and baked, you won’t even notice. If it bothers you, toss them with a little lemon juice after cutting.
Wrapping Up
This cinnamon apple french toast casserole has become my go-to whenever I need to feed people breakfast without losing my mind.
The make-ahead factor alone makes it worth trying. But honestly, the way your house smells while it’s baking is reason enough to add this to your rotation.
Soft custardy bread, caramelized apples, crispy streusel topping. It hits all the right notes without being overly complicated or fussy.
Give it a try next weekend and let me know how it turns out in the comments below. Did you add any fun toppings? Use a different type of apple? I’d love to hear what worked for you.
