Custardy Sourdough French Toast (Ready in 15 Minutes)
This sourdough French toast is what weekend mornings call for. Thick slices of tangy bread soak up a vanilla custard, then fry to a crisp, golden shell with a soft, pillowy middle.
It feels a little special but comes together in 15 minutes with a handful of pantry staples. This is the recipe you reach for when you want a breakfast that looks like you fussed, but didn’t.
Why This French Toast Works
Sourdough brings a gentle tang that cuts through the sweet custard. The bread is naturally sturdy, so it can handle a long soak without turning to mush.
The outside gets shatteringly crisp while the inside stays tender and steam. It tastes like something from a corner bakery, but you do not need any special equipment or technique.
Ingredients
- 4 thick slices day-old sourdough bread: about ¾ inch thick. Staler bread soaks up custard better without falling apart.
- 2 large eggs: at room temperature, they mix in more smoothly.
- ½ cup whole milk: richness is key, but 2% works if that’s what you have.
- 1 tbsp granulated sugar: helps with caramelization and a touch of sweetness.
- 1 tsp vanilla extract: pure vanilla gives the deepest flavor.
- ½ tsp ground cinnamon: the classic French toast spice.
- Pinch of sea salt: balances all the sweetness.
- 2 tbsp unsalted butter, divided: for frying, you want enough to coat the skillet generously.
Variations / Substitutions
- Swap the bread: brioche or challah work beautifully if you prefer a softer, buttery result. Cut slices a little thinner and soak for less time.
- Use a dairy-free milk: unsweetened oat or almond milk will make a thinner custard, so add an extra egg yolk for richness.
- Change the sweetener: brown sugar or coconut sugar give a deeper molasses note. Use the same amount.
- Add some warmth: a scrape of fresh nutmeg or a pinch of cardamom in the custard makes it cozy.
If you enjoy this, try our Fluffy Buttermilk Pancakes for another quick breakfast.
How to Make Custardy Sourdough French Toast
Step 1: Whisk the Custard
Crack the 2 eggs into a shallow bowl or pie dish. Add the ½ cup milk, 1 tbsp sugar, 1 tsp vanilla, ½ tsp cinnamon, and a pinch of salt. Whisk until the mixture is pale yellow and completely smooth, with no streaks of egg white.
The cinnamon will float a little, that’s fine. You want the sugar fully dissolved so it does not stay grainy on the toast.
Step 2: Soak the Sourdough
Dip one slice of bread into the custard. Let it sit for about 30 seconds, then flip and soak the other side for another 30 seconds. Lift it out and let the excess drip back into the bowl.
The bread should feel heavy and saturated but still hold its shape. Day-old sourdough absorbs the liquid without turning mushy. If you are using fresh bread, cut the soak to 10 seconds per side.
Step 3: Fry the French Toast
Set a large skillet over medium heat and melt 1 tablespoon of the butter. Once the butter foams, place the soaked slices in the pan. Cook for 3 to 4 minutes, until the underside is deep golden and the edges start to crisp.
Flip with a wide spatula and cook another 3 to 4 minutes. The kitchen will smell like butter and cinnamon, and the crust will look caramelized and dry to the touch. Repeat with the remaining butter and slices, wiping out any dark butter bits between batches.
Step 4: Drizzle with Maple Syrup and Serve
Stack the toast on warm plates and pour on plenty of maple syrup. A dusting of powdered sugar or a few fresh berries are nice, but not required.
Serve right away while the center is still steamy and soft. The contrast between the crisp crust and tender middle is what this French toast is all about.
Tips for the Best Sourdough French Toast
- Use a heavy skillet: cast iron or a thick stainless steel pan holds heat evenly, which means better browning and a crispier crust.
- Keep cooked slices warm: place a wire rack on a sheet pan in a 200°F oven and hold finished toast there while you fry the rest. It stays crisp, not steamed.
- Don’t overcrowd the pan: give each slice a couple inches of space so the edges caramelize instead of steaming.
- Add a bit of richness: swap 2 tablespoons of the milk for heavy cream in the custard. The toast gets a silkier, slightly more decadent center.
Cook time varies slightly with bread thickness:
| Thickness | Time per Side |
|---|---|
| ½ inch | 2-3 minutes |
| ¾ inch | 3-4 minutes |
| 1 inch | 4-5 minutes |
Keeping Leftover French Toast
- Refrigerate: cool completely, then store slices in an airtight container for up to 3 days.
- Reheating: the best way to bring back the crisp is in a dry skillet over medium heat for a minute per side. A toaster or toaster oven also works, though the inside will be a little softer.
What to Serve With Custardy Sourdough French Toast
Crispy bacon or breakfast sausage are the savory classics that balance the sweet maple. For something lighter, a pile of fresh berries or a spoonful of Greek yogurt with a drizzle of honey adds a cool, tangy contrast. A simple fruit salad with citrus cuts through the richness nicely.
Frequently Asked Questions
Why is my French toast soggy?
The pan likely is not hot enough, so the bread steams instead of searing. You want the butter foaming when the slices hit the pan.
Can I use fresh sourdough instead of day-old?
Yes, but fresh bread is softer and absorbs less custard. Soak for only 10 seconds per side to keep it from turning mushy.
Can I make the custard the night before?
Absolutely. Whisk everything together, cover, and refrigerate. Give it a quick whisk before dipping the bread in the morning.
Why add sugar to the egg mixture?
Sugar promotes browning and gives a hint of sweetness even before the syrup goes on. Without it, the toast won’t develop that golden caramelized crust.
Custardy Sourdough French Toast Recipe
Ingredients
Method
- In a shallow bowl, whisk together the eggs, milk, sugar, vanilla, cinnamon, and salt until smooth.
- Dip each bread slice into the custard, soaking for 30 seconds per side. Let the excess drip off.
- Melt 1 tbsp butter in a large skillet over medium heat. Place the soaked slices in the skillet and cook for 3 to 4 minutes per side until deep golden. Repeat with the remaining butter and slices.
- Serve warm, drizzled with maple syrup.
