There’s a moment every December—usually the morning of December 24—when my childhood kitchen smelled like cinnamon, maple, and the faint tang of sourdough. My mother would pull a puffed, custardy casserole from the oven, the top bronzed with sugar and butter, the edges bubbling like lava. We’d tear into it while the stockings were still half-hung and the coffee was still dripping. Thirty years later, I still serve the same sourdough French toast bake on Christmas Eve brunch, only now I make the sourdough myself, feed it with rye flour for extra tang, and let the cubes sit overnight so every bite tastes like holiday memory. If you’ve never tried a baked French toast, prepare to retire the skillet version forever. The custard soaks deeper, the tops crisp like crème-brûlée lids, and the maple-cinnamon perfume drifts through the house like a promise that no one has to leave their pajamas before noon.

Why This Recipe Works

Overnight Magic: The 12-hour rest lets the custard fully penetrate the sourdough so every cube bakes into a custardy interior with caramelized edges.
Tangy Balance: Naturally leavened sourdough adds gentle acidity that cuts the sweetness of maple syrup and brown sugar.
Texture Play: Cubes, not slices, create crispy ridges and soft pockets—no soggy bottoms, ever.
Hands-Off Hosting: Assemble the night before; bake while gifts are unwrapped.
Maple Infusion: Three hits—custard, drizzle, and whipped maple butter—build layers of flavor.
Scalable: Doubles or triples beautifully for a crowd; bake in two dishes if needed.
Holiday Make-Ahead: Keeps 3 days refrigerated or 2 months frozen without losing loft.

Ingredients You'll Need

Great French toast bake starts with bread that has something to say. A loaf of sourdough—ideally 24–36 hours old—brings chew, tang, and structure. If you bake your own, aim for 70 % hydration; the open crumb drinks custard like a sponge. Store-bought works too—look for “country-style” or “artisan” loaves, not the soft sandwich squares. You’ll need 10 loosely packed cups, which translates to one 800 g loaf.

Next, eggs. I use six large ones plus two yolks for extra richness. The yolks add emulsifiers that keep the custard silky even if you over-bake by a minute or two. Whole milk is classic, but I swap half for evaporated milk during the holidays; the concentrated proteins create a flan-like texture. Heavy cream would be overkill—save it for the whipped topping.

Maple syrup is non-negotiable. Use the darkest Grade A “Very Dark” you can find; the robust flavor survives the heat. Avoid pancake syrup (corn syrup with perfume). Brown sugar deepens the maple notes and helps the top crust caramelize. A whisper of orange zest brightens the whole dish without announcing itself.

Spice: Ceylon cinnamon for warmth, plus a pinch of cardamom for Scandinavian holiday vibes. Vanilla bean paste speckles the custard; extract works in a pinch. Kosher salt is essential—without it the bake tastes flatly sweet.

Finally, butter. You’ll dot the top so the sugar turns into a shattery brûlée lid. Use unsalted; salted butter can weep and leave greasy spots.

How to Make Sourdough French Toast Bake with Cinnamon and Maple Syrup for Holiday Brunch

Cube & Dry the Bread

Cut sourdough into 1-inch cubes. Spread on a rimmed sheet pan and let sit uncovered 6 hours or overnight. Slightly stale bread soaks up custard without collapsing. If you’re short on time, toast at 250 °F for 25 minutes, stirring twice.

Whisk the Custard

In a large bowl whisk 6 eggs, 2 yolks, 1 cup whole milk, 1 cup evaporated milk, ½ cup maple syrup, ⅓ cup brown sugar, 2 tsp Ceylon cinnamon, ¼ tsp cardamom, 1 Tbsp vanilla bean paste, and ½ tsp kosher salt until the mixture is homogeneous and slightly frothy.

Soak & Layer

Butter a 9×13-inch ceramic or glass dish. Pile in the bread cubes. Slowly ladle custard, pressing gently so every cube is moistened. The liquid should come ¾ up the sides. Scatter ½ cup toasted pecans between layers for hidden crunch.

Refrigerate Overnight

Cover tightly with greased plastic wrap; top with a small plate to weigh the bread down. Chill 12–24 hours. Longer than 24 and the bread may break down; shorter and the centers stay dry.

Room-Temp Rest

Next morning, remove from fridge 30 minutes before baking. Cold casserole in a hot oven shocks the ceramic and causes uneven cooking.

Top & Bake

Dot the surface with 3 Tbsp cold unsalted butter cubes. Combine 2 Tbsp brown sugar + ½ tsp cinnamon; sprinkle over top. Bake at 375 °F on center rack 40–45 minutes until puffed, golden, and 185 °F in the center. If browning too fast, tent with foil after 30 minutes.

Rest & Caramelize

Let stand 10 minutes; custard sets and the top lacquers. For extra crunch, broil 6 inches from element 1–2 minutes—watch like a hawk.

Maple Finish

Warm ½ cup maple syrup with 1 Tbsp butter and a pinch of salt. Drizzle over each serving and top with maple-whipped cream (¾ cup cream + 2 Tbsp maple syrup beaten to soft peaks).

Expert Tips

Temp Check

An instant-read thermometer is your insurance. Pull at 185 °F for silky centers; above 195 °F and the custard weeps.

Dish Choice

Ceramic retains heat gently; metal pans cook faster—reduce time by 5 minutes.

Overnight Swap

No time for overnight? Microwave the custard until lukewarm (not hot) before pouring; 30-minute soak equals 12-hour chill.

Nut Toast

Toast pecans at 350 °F for 6 minutes; cool before layering to keep their crunch.

Freezer Trick

Freeze individual portions on a sheet pan, then bag. Reheat at 325 °F 12 minutes—taste like fresh.

Clean Slices

Use a plastic bench scraper to portion; metal knives compress the custard.

Variations to Try

Cranberry Orange: Swap orange zest for clementine; fold 1 cup fresh cranberries into the bread layers for tart pops.
Eggnog Spice: Replace half the milk with chilled eggnog and add ¼ tsp nutmeg.
Chocolate Hazelnut: Layer ½ cup chocolate hazelnut spread between bread cubes; top with chopped hazelnuts.
Bourbon Maple: Add 2 Tbsp bourbon to the custard; flame the maple syrup for drama tableside.
Gluten-Free: Use a crusty gluten-free sourdough; bake 5 minutes longer.

Storage Tips

Refrigerator: Cool completely, cover with foil, and refrigerate up to 3 days. Reheat covered at 325 °F for 15 minutes, then uncover 5 minutes to crisp.

Freezer: Wrap individual portions in plastic, then foil. Freeze up to 2 months. Thaw overnight in fridge or microwave on 50 % power until soft, then crisp in toaster oven.

Make-Ahead: Assemble through step 4, cover tightly, and freeze unbaked for up to 1 month. Bake from frozen at 350 °F for 60–70 minutes, adding foil if needed.