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Savory Croissant Breakfast Bake with Spinach & Gruyère

Elevate your brunch with this savory croissant breakfast bake featuring flaky croissants, creamy Gruyère, and fresh spinach. A perfect dish to transform day-old croissants into a gourmet meal.
Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Course Breakfast
Cuisine French
Servings 6
Calories 520 kcal

Ingredients
  

Main

  • 4 large croissants slightly stale and torn into large pieces
  • 2 cups fresh spinach roughly chopped
  • 1 cup Gruyère cheese shredded
  • 8 large eggs
  • 1 cup whole milk
  • 1 cup heavy cream
  • 1 teaspoon Dijon mustard
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon nutmeg freshly grated

Garnish

  • 2 tablespoons chives finely chopped

Instructions
 

  • Preheat oven to 350°F (175°C) and lightly grease a 9x13 inch baking dish.
  • Layer the torn croissant pieces in the baking dish, top with chopped spinach and shredded Gruyère cheese.
  • Whisk together eggs, whole milk, heavy cream, Dijon mustard, salt, pepper, and nutmeg to make custard.
  • Pour custard over the croissants, spinach, and cheese. Let sit for 5 minutes to soak.
  • Bake for 30-35 minutes until top is golden and custard is set.
  • Let the bake rest after removing from oven, then sprinkle with chopped chives and serve.

Notes

Best with slightly stale croissants. For a lower-fat option, use half-and-half or a mix of dairy and milk alternative in place of heavy cream.