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Classic Vegetable Frittata

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A sweet, custardy baked French toast loaded with fresh blueberries and topped with a crumbly streusel — prepared the night before for an easy morning bake.

Ingredients

  • For the casserole:
  • 1 loaf (14–16 oz) day-old French bread, cut into 1-inch cubes
  • 8 large eggs
  • 2 cups whole milk
  • 1/2 cup heavy cream
  • 3/4 cup granulated sugar
  • 2 teaspoons vanilla extract
  • 1 teaspoon ground cinnamon
  • Pinch of salt
  • 2 cups fresh or frozen blueberries
  • For the streusel topping:
  • 1/2 cup all-purpose flour
  • 1/2 cup brown sugar, packed
  • 1 teaspoon ground cinnamon
  • 1/4 teaspoon salt
  • 1/2 cup cold unsalted butter, cubed

Instructions

  • Grease a 9×13-inch baking dish and arrange bread cubes evenly inside.
  • Sprinkle blueberries evenly over the bread.
  • In a large mixing bowl, whisk together eggs, milk, cream, sugar, vanilla, cinnamon, and salt.
  • Pour egg mixture evenly over the bread and blueberries, pressing gently to help soak the bread.
  • Cover with plastic wrap and refrigerate overnight (or at least 4 hours).
  • In a separate bowl, mix flour, brown sugar, cinnamon, and salt for the streusel. Cut in butter until mixture forms coarse crumbs. Cover and refrigerate.
  • When ready to bake, preheat oven to 350°F (175°C). Sprinkle streusel evenly over the casserole.
  • Bake uncovered for 45–55 minutes, until golden and set in the center.
  • Serve warm with maple syrup, powdered sugar, or extra berries.

Notes

  • Best assembled the night before for convenience and better flavor.
  • Use brioche or challah bread for an even richer casserole.
  • Leftovers can be stored in the fridge for up to 3 days and reheated in the oven or microwave.