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Buttery Breakfast Casserole

Buttery Breakfast Casserole for Cozy Weekend Mornings

This Buttery Breakfast Casserole, full of flaky croissants and savory sausage, is the perfect make-ahead solution for cozy weekend breakfasts.
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Prep Time 20 minutes
Cook Time 45 minutes
Refrigeration Time 4 hours
Total Time 5 hours 5 minutes
Servings: 8 slices
Course: Breakfast
Cuisine: American
Calories: 450
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Casserole
  • 8 pieces Croissants Fresh or slightly stale for best absorption
  • 1 tablespoon Extra-Virgin Olive Oil For greasing and sautéing
  • 4 tablespoons Scallions Both white and light green parts
  • 1 pound Sweet Italian Sausage Can substitute with breakfast or turkey sausage
  • 2 tablespoons Fresh Sage Chopped finely for better integration
  • 6 large Eggs Forms the custard base
  • 2 cups Whole Milk Can substitute with almond milk for dairy-free
  • 1 cup Heavy Cream Coconut cream is a great substitute for dairy-free
  • 1 cup Gruyère Cheese Grated for even melting
  • 1 teaspoon Kosher Salt To taste
  • 1 teaspoon Black Pepper To taste
For Optional Toppings
  • 1 cup Additional Gruyère Cheese Sprinkle on before baking
  • Fresh Herbs Scallion tops or parsley for garnish

Equipment

  • 9x13-inch baking dish
  • Large Skillet
  • large bowl
  • Parchment paper

Method
 

Step-by-Step Instructions
  1. Preheat your oven to 500°F (260°C) and prepare your baking sheet with parchment paper.
  2. Cut croissants in half and toast cut side up for 5-10 minutes until golden and crispy.
  3. In a skillet, heat olive oil and sauté scallions and sausage for about 5 minutes, then fold in sage.
  4. Combine toasted croissant pieces with sausage mixture in a large bowl.
  5. In a separate bowl, whisk eggs, milk, cream, cheese, salt, and pepper until smooth.
  6. Grease the baking dish, layer croissant mixture, pour custard, and press down slightly.
  7. Cover and refrigerate for at least 4 hours or overnight.
  8. Preheat oven to 350°F (175°C), add additional cheese, and bake for about 45 minutes.
  9. After cooling for 10 minutes, garnish with fresh herbs and serve warm.

Nutrition

Serving: 1sliceCalories: 450kcalCarbohydrates: 30gProtein: 24gFat: 28gSaturated Fat: 16gPolyunsaturated Fat: 2gMonounsaturated Fat: 8gCholesterol: 240mgSodium: 900mgPotassium: 400mgFiber: 2gSugar: 4gVitamin A: 1500IUVitamin C: 3mgCalcium: 300mgIron: 2mg

Notes

Let the casserole sit in the fridge for a minimum of 4 hours for the best texture and flavor.

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