Lemon Blueberry Baked French Toast Casserole

Lemon Blueberry Baked French Toast Casserole cover

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Lemon Blueberry Baked French Toast Casserole

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Ingredients

Warning0 allergens identified

Lemon Blueberry Baked French Toast Casserole

nonstick cooking spray

1 lb day-old challah

8 eggs

½ cup sugar

1 ¾ cups whole milk(plus 2 Tbsp)

1 tsp vanilla extract

2 lemons(zested)

⅛ tsp salt

1 cup fresh blueberries

powdered sugar(for dusting)

Instructions

Preheat the oven to 350°F.

Spray a 9x13-inch baking dish liberally with nonstick cooking spray.

Cut bread into 1-inch cubes and transfer to a large mixing bowl. Set aside.

In a large mixing bowl, combine eggs, sugar, milk, vanilla extract, lemon zest and salt and whisk until smooth. Add to bread cubes, then add blueberries, and fold with a rubber spatula.

Transfer bread mixture to prepared baking dish.

Bake French toast on middle rack of oven until it is golden brown on top and a toothpick inserted in the center of a piece comes out clean, 45-50 minutes.

Check to see that French toast is done. Remove from oven or add time as needed.

Allow French toast to cool in dish for at least 10 minutes. Prior to serving, plate toast (cut as desired), then sift powdered sugar over the top. Refrigerate leftovers for 2-3 days.

Video Tutorial Bite Tutorial

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Tips & Tricks (5)

Day-Old Bread is Non-Negotiable 🍞
Use challah that's at least 24 hours old; fresh bread absorbs too much custard and becomes mushy, while day-old bread maintains structure and creates the perfect custardy interior with slight firmness.
Zest Before Juicing Lemons 🍋
Zest your lemons first while they're whole and firm, then juice them; this prevents the zester from slipping on a halved lemon and ensures you capture maximum aromatic oils for brighter flavor.
Overnight Soaking Transforms Texture 🌙
Prepare the casserole and refrigerate overnight before baking; this allows the bread to fully absorb the custard mixture evenly, resulting in consistent, creamy layers throughout rather than dry spots.
Toss Blueberries in Flour 💙
Coat fresh blueberries lightly in flour or cornstarch before folding them in; this prevents them from sinking to the bottom and keeps them distributed throughout the casserole for every bite.
Double the Powdered Sugar Topping 🎿
Add half the powdered sugar before baking and the remainder immediately after removing from the oven while the casserole is still warm; this creates a beautiful frosted appearance and prevents the sugar from dissolving into the custard.