If you're looking for a way to turn yesterday's bread into today's masterpiece, this Sourdough French Toast Bake is your golden ticket. Imagine the tangy richness of sourdough paired with a creamy custard base, baked to golden perfection, and finished with a drizzle of maple syrup.
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I'm a huge fan of turning "flops" into fresh favorites (see: How to Reuse Leftover Food for more ideas). Not every sourdough loaf bakes up bakery-perfect, and that's okay.
Maybe it over-fermented, didn't rise enough, or collapsed under too much hydration. Sometimes even the weather plays tricks, leaving you with a flat, dense loaf.
Here's the secret: the number one rule of sourdough is to bake it anyway. Even if it's not ideal for sandwiches or snacking, it still has a new purpose waiting.
Cubed, soaked, and baked in a simple custard, that imperfect sourdough transforms into a rich, custardy sourdough French toast bake, a dish so good you'll wonder if the loaf was meant for this recipe all along. You can even turn it into some Sourdough Bread Pudding!
Sourdough French Toast Bake is a warm, budget-friendly, and absolutely irresistible breakfast that doesn't just rescue a loaf from going to waste, it revives it into something everyone at the table (yes, even picky eaters) will happily devour.
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💛 Why You'll Love This Recipe
- Frugal and resourceful. This sourdough French toast bake gives new life to stale or imperfect sourdough, turning it into something cozy and intentional instead of wasteful. It has all the comfort of sourdough French toast with far less effort.
- Effortless prep. Everything comes together in one bowl and one baking dish, meaning minimal cleanup and no stovetop flipping or babysitting.
- Make ahead friendly. Assemble it the night before and let the bread soak overnight. In the morning, just bake for a warm, stress free breakfast.
🛒 Ingredients
- Sourdough bread - Slightly stale works best since it soaks up the custard without falling apart. I use my Low Hydration Sourdough Bread, but any higher hydration loaf will work just as well.
- Eggs - The backbone of the custard, adding richness and structure.
- Milk - Whole or 2% gives the creamiest custard texture.
- Brown + white sugar - A balance of depth and sweetness for a caramelized finish.
- Maple syrup - Stirred into the custard for natural sweetness and layered flavor
See the recipe card below for full ingredients and instructions.
🔀 Substitutions & Variations
- Bread. Sourdough adds tangy depth, but challah, brioche, or French bread work well for a richer, sweeter bake. Avoid soft sandwich bread, which can become mushy.
- Milk. Use half and half for a richer custard or almond or soy milk for a dairy free option. Coconut milk adds a light tropical note.
- Sweetener. Replace part of the sugar with honey or maple syrup for natural sweetness. Brown sugar adds a caramel like flavor.
- Add ins. Mix in berries, chocolate chips, diced apples, or chopped nuts like pecans or walnuts for extra texture.
- Holiday twist. Add pumpkin spice or gingerbread spices for a festive, seasonal version.
💰 Budget-Friendly Tips
Rescue Imperfect Loaves: This Sourdough French Toast Bake is the perfect use for flat, dense, or over-proofed sourdough loaves that didn't bake as planned. Cube it and transform it instead of wasting it.
Use Day-Old Bread: Stale bread absorbs custard better, making it ideal here; no need for perfectly fresh loaves.
Make It Stretch: Serve with eggs or breakfast sausage to turn one small casserole into a filling family breakfast.
Bulk Bake & Freeze: Double the recipe in a 9x13 dish. Eat half now and freeze the rest in individual portions for quick grab-and-go breakfasts later.
DIY Toppings: Skip expensive syrups by topping with homemade fruit compote or a simple dusting of powdered sugar.
🥄 Instructions for Sourdough French Toast Bake
Step 1: Preheat oven to 350°F and grease an 8x8 baking dish with butter. Set aside.
Step 2: In a bowl, whisk together eggs, milk, sugars, vanilla, cinnamon, nutmeg, salt, melted butter, and syrup. (Image 1).
Step 3: Place the cubed sourdough bread in the dish. (Image 2).
Step 4: Pour the egg mixture over the bread cubes. Gently press down to ensure all bread is coated. (Image 3).
Step 5: Cover and let sit for at least 30 minutes, or refrigerate overnight for a more custardy texture.
Step 6: Bake uncovered for 30-35 minutes, until the top is golden and the center is set. A knife inserted in the center should come out clean. (Image 4).
Serve warm with additional maple syrup, fruit, or a dusting of powdered sugar. Enjoy!
👩🏻🍳 Expert Tips
- Overnight soak. For the best texture, let the bread soak overnight so the custard fully absorbs.
- Same day baking. If baking right away, press the bread firmly into the custard to help it soak evenly.
- Normal settling. The bake will puff up in the oven and settle as it cools, which is completely normal.
- Serve with care. The center stays hot longer than the edges, so use caution when serving.
❄️ Storage, Reheating & Make Ahead
Storage and freezing. Store leftovers in an airtight container in the refrigerator for 3 to 4 days, or freeze wrapped portions for up to 2 months. Thaw overnight before reheating.
Reheating. Warm in a 325°F oven for 10 to 15 minutes to keep the top crisp, or microwave for 30 to 60 seconds for a softer texture.
Make ahead. Assemble the night before, cover, and refrigerate. Uncover and bake in the morning. If using a glass dish, let it sit at room temperature for about 30 minutes before baking.
🥗 Side Dishes or Pairing Ideas
This custardy breakfast casserole is versatile and pairs well with:
- Fresh fruit (berries, melon, or citrus) for brightness.
- Scrambled eggs or oven-baked bacon for a hearty brunch spread.
- A cozy warm drink like coffee with Cinnamon Toast Crunch Latte or a frothy latte.
- Scrambled Eggs with Spinach and TomatoesRecipe $2.25 / Serving $1.13
- Cinnamon Toast Crunch LatteRecipe $0.44
- Strawberry Blueberry ParfaitRecipe $2.97 / Serving $1.49
- Canned Breakfast Potatoes RecipeRecipe $2.96 / Serving $0.59
❓ Recipe FAQs
Absolutely! In fact, sourdough is one of the best options because of its sturdiness and tangy flavor. It gives a balanced sweetness to the custard and a texture that doesn't turn soggy, making it ideal for baked French toast dishes.
Nope! While overnight soaking creates the most custardy texture, even 30 minutes of resting time allows the bread to absorb enough liquid for a delicious bake.
The top should be golden brown and a knife inserted into the center should come out clean. If the knife looks wet or eggy, give it another 5 minutes.
It's lightly sweet, designed to leave room for toppings. If you prefer a dessert-like bake, add a bit more sugar or swirl in jam, Nutella, or chocolate chips.
🍽️ More Recipes You'll Love
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- Sourdough CornbreadRecipe $2.14 / Serving $0.27
- Sourdough Chicken and DumplingsRecipe $4.96 / Serving $0.83
- Sourdough Starter GravyRecipe $0.67 / Serving $0.34
🐝 If you tried this Sourdough French Toast Bake, please leave a ⭐️ star rating and share your buzz in the 💬 comments below. I'd truly appreciate it!
📖 Recipe
Sourdough French Toast Bake
Ingredients
- 4 cups stale sourdough bread, cut into cubes (about ½ loaf) - ($0.49)
- 2 large eggs - ($0.44)
- ¾ cup milk - ($0.12)
- 2 tablespoons brown sugar - ($0.06)
- 2 tablespoons granulated sugar - ($0.04)
- ½ teaspoon vanilla extract - ($0.01)
- ½ teaspoon ground cinnamon - ($0.08)
- ¼ teaspoon salt - ($0.01)
- ⅛ teaspoon ground nutmeg, optional - ($0.01)
- 1 tablespoon unsalted butter, melted - ($0.11)
- ¼ cup maple syrup, plus more for serving - ($1.28)
Instructions
- Preheat and prep. Preheat the oven to 350°F and grease an 8x8-inch baking dish with butter.
- Add bread. Place the cubed sourdough bread evenly in the prepared baking dish.
- Mix custard. In a mixing bowl, whisk together the eggs, milk, brown sugar, granulated sugar, vanilla extract, cinnamon, nutmeg (if using), salt, melted butter, and syrup until smooth.
- Soak. Pour the custard mixture over the bread cubes. Gently press down to ensure all pieces are coated.
- Rest. Cover and let sit for at least 30 minutes, or refrigerate overnight for a more custardy texture.
- Bake. Bake uncovered for 30 to 35 minutes, until the top is golden and the center is set. A knife inserted in the center should come out clean.
- Serve. Serve warm with maple syrup, fresh fruit, or a dusting of powdered sugar.
Notes
- Soak Time: For the most custardy texture, let the bread soak overnight. If you're short on time, 30 minutes is still enough for a delicious bake.
- Make It Ahead: Assemble the night before, cover tightly, and bake in the morning for a stress-free breakfast.
- Storage & Reheating: Store leftovers in the fridge for up to 3-4 days. Reheat in the oven at 325°F to keep the top crisp or microwave for a softer texture.
- Freezer-Friendly: Freeze baked portions individually wrapped for up to 2 months. Thaw overnight before reheating.
- Doubling the Amount: If you double this recipe for a 9x13 pan, bake at 350°F for 35-45 minutes, or until the center is set and the top is golden. Check doneness with a knife inserted in the center, it should come out clean.
Nutritional Information
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Nicole Durham says
I love the simple ease of making this recipe and knowing that it's there for when we dont finish a loaf fast enough is always a welcomed feeling.