Best French Toast Casserole | Easy Overnight Breakfast Bake

Looking for a breakfast that’s warm, comforting, and perfect for weekends or holidays? This French Toast Casserole Recipe is a crowd pleasing dish that brings all the flavours of classic French toast, but with half the effort! Made with fluffy bread soaked in a rich custard, baked until golden, and topped with a cinnamon sugar crumble, this casserole is ideal for breakfast, brunch, or even dessert.

Table of Contents

Prep & Cook Time

Prep Time: 15 minutes
Cook Time: 40 minutes
Total Time: 55 minutes
Servings: 8

Ingredients

1 loaf French bread or brioche, cut into cubes (about 10–12 cups)
8 large eggs
2 cups milk
½ cup heavy cream
½ cup granulated sugar
¼ cup brown sugar
2 tsp vanilla extract
1 tsp cinnamon
¼ tsp nutmeg
Pinch of salt

For the topping:

½ cup all-purpose flour
½ cup brown sugar
1 tsp cinnamon
¼ cup cold butter, cubed

Step-by-Step Instructions

Step 1: Prepare the base

Grease a 9×13-inch baking dish and add the cubed bread evenly across the bottom.

Step 2: Make the custard

In a large bowl, whisk together eggs, milk, cream, sugars, vanilla, cinnamon, nutmeg, and salt until well combined.

Step 3:Pour and soak

Pour the egg mixture evenly over the bread cubes. Press gently to make sure all pieces are soaked. Cover and refrigerate overnight or for at least 2 hours (optional but recommended for the best texture).

Step 4: Make the topping

In a small bowl, combine flour, brown sugar, and cinnamon. Cut in the butter using a fork or your fingers until crumbly.

Step 5: Bake

When ready to bake, preheat your oven to 350°F (175°C). Sprinkle the crumble topping evenly over the casserole and bake uncovered for 40–45 minutes, until golden brown and set.

Step 6: Serve

Let it cool slightly, then drizzle with maple syrup, dust with powdered sugar, or top with fresh berries.

Tips & Variations

Make it overnight: Prepare everything the night before and refrigerate. Just bake in the morning for a no stress breakfast!
Add ins: Try adding cream cheese chunks, raisins, or chopped pecans for extra flavour.
Dairy free option: Substitute milk and cream with almond or oat milk and use vegan butter.
Make it sweeter: Sprinkle a little extra brown sugar before baking for a caramelized finish.

Serving Suggestions

Serve this cozy French Toast Casserole warm with a drizzle of maple syrup, whipped cream, or a dusting of powdered sugar. Pair it with a cup of hot coffee or a glass of orange juice for a perfect brunch combo.

Nutrition Facts (per serving):

Nutrient	Amount
Calories	370 kcal
Carbohydrates	42g
Protein	10g
Fat	18g
Saturated Fat	9g
Cholesterol	160mg
Sodium	280mg
Sugar	20g
Fiber	1g

Final Thoughts

This French Toast Casserole is everything you love about French toast crispy edges, soft custard center, and warm, spiced sweetness all baked into one easy dish. Whether you’re hosting brunch or craving a cozy breakfast at home, this recipe is sure to become a family favourite!