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Triple Berry French Toast Bake

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Triple Berry French Toast Bake is a comforting and crowd-pleasing breakfast casserole featuring a buttery brown sugar base, layers of custard-soaked French bread, juicy mixed berries, and a sweet cinnamon streusel topping. Baked in a large cast iron pan, it’s perfect for brunch gatherings or holiday mornings.

Ingredients

Scale
  • 4 Tablespoons unsalted butter, melted
  • ½ cup packed golden brown sugar
  • 14 oz French bread, cubed into -inch pieces
  • 6 large eggs, slightly beaten
  • ¾ cup milk (2% or whole)
  • 1 Tablespoon pure vanilla extract
  • 1 Tablespoon ground cinnamon
  • 12 oz frozen triple berry mix (defrosted)
  • Streusel Topping:
  • 1 cup all-purpose flour
  • ⅓ cup brown sugar
  • 3 Tablespoons granulated sugar
  • 1 teaspoon cinnamon
  • 6 Tablespoons unsalted butter, melted

Instructions

  1. Adjust oven rack to the middle position and preheat oven to 350°F (175°C).
  2. Cube the French bread into 1½-inch pieces and place in a large bowl. Set aside.
  3. Remove frozen berries from the freezer to begin defrosting.
  4. In a small bowl, mix 4 Tablespoons melted butter with ½ cup brown sugar. Spread this mixture evenly in the bottom of a 5- to 7-quart cast iron pan.
  5. In a medium bowl, whisk together eggs, milk, vanilla extract, and 1 Tablespoon cinnamon.
  6. Pour the egg mixture over the cubed bread and toss gently to coat all pieces.
  7. Layer the coated bread over the brown sugar mixture in the cast iron pan. Spread evenly.
  8. Top with defrosted triple berry mix.
  9. Bake uncovered for 25 minutes. If bread begins to brown too much, cover loosely with a lid or foil.
  10. Meanwhile, prepare the streusel topping by combining flour, brown sugar, granulated sugar, cinnamon, and melted butter in a small bowl. Mix until crumbly.
  11. After 25 minutes of baking, sprinkle the streusel topping over the casserole and return to the oven.
  12. Bake for an additional 30 minutes, or until golden and set.
  13. Remove from oven and let cool slightly before serving.

Notes

  • Use slightly stale French bread for best texture—fresh bread may result in a softer casserole.
  • Customize the berries with your favorite mix—blueberries, raspberries, blackberries, or strawberries.
  • Let rest for 10 minutes after baking for easier slicing and serving.

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