Blueberry Brioche French Toast Casserole

Ever found yourself with a surplus of brioche buns that you were planning on turning into crabs for a Luau? Neat, me too. Luckily, I've done the research for both of us, and these fluffy wonders need not go to waste. Behold: the french toast casserole.

This recipe is really simple and quick. Probably quicker for you, because you're likely better at cutting cold butter than I am.


2 or 3 giant brioche rolls or the equivalent in smaller ones. Mine were from Trader Joe's. Basically, just enough bread to fill about 10 cups, okay?

6 eggs

2 1/2 cups milk. I used almond milk.

3/4 cups white sugar

1/2 cup brown sugar, packed

2 tablespoons vanilla

1/2 cup flour

3ish tsp cinnamon

1 stick butter, salted

about a 1/4 cup blueberries


  1. Grease a 9x13 pan and preheat the oven to 350 degrees.
  2. Rip up the bread into small chunks and pile em into the pan.
  3. In a bowl, mix the eggs, milk, vanilla, white sugar and 1 tsp cinnamon
  4. Pour the liquid mixture over the bread chunks and press any dry pieces into the liquid.
  5. Tuck the blueberries into the cracks between bread chunks.
  6. Mix together the flour, brown sugar, and remaining cinnamon (feel free to add a bit extra) together. Cube the butter, then mix in until it comes together somewhat.
  7. Sprinkle the butter/flour/sugar mixture over the top of the bread mixture.
  8. Bake for 45-60 minutes.
  9. Store in the fridge, tightly covered. Yay!
Brioche French Toast Gif.gif