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Overnight Breakfast Casserole Recipe

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Overnight Breakfast Casserole is a hearty and flavorful make-ahead dish, combining eggs, bread, cheese, and your choice of meats or vegetables. It’s a perfect stress-free breakfast for busy mornings, holidays, or family gatherings.

Ingredients

1 loaf of crusty bread (such as French bread or sourdough), cut into cubes

10 large eggs

2 cups milk (dairy or non-dairy)

1 teaspoon Dijon mustard (optional)

1 teaspoon garlic powder

1 teaspoon onion powder

Salt and pepper, to taste

2 cups shredded cheese (cheddar, mozzarella, or a blend)

1 cup cooked sausage (optional)

1 cup fresh spinach, mushrooms, or bell peppers (optional)

¼ cup chopped green onions or fresh parsley for garnish (optional)

Instructions

  1. Preheat oven to 350°F (175°C) and grease a 9×13-inch baking dish.
  2. Cut the loaf of bread into cubes. For a crispier texture, toast the bread cubes at 350°F for 5-10 minutes.
  3. In the prepared baking dish, layer the bread cubes evenly. If using cooked sausage, sprinkle it over the bread. Add any veggies like spinach, mushrooms, or bell peppers.
  4. In a large bowl, whisk together eggs, milk, Dijon mustard (if using), garlic powder, onion powder, salt, and pepper. Pour the mixture evenly over the bread and meat/veggies. Press the bread gently to help it absorb the mixture.
  5. Top with shredded cheese and refrigerate overnight (or at least 4-6 hours).
  6. Preheat oven to 350°F (175°C). Bake for 40-45 minutes, or until eggs are set and the top is golden. For a crispier top, broil for 2-3 minutes at the end.
  7. Let cool for a few minutes before serving. Garnish with green onions or parsley.

Notes

For a vegetarian version, skip the sausage and add more vegetables like mushrooms, spinach, or bell peppers.

Try different cheeses like cheddar, mozzarella, or even goat cheese for variety.

For a spicier kick, add diced jalapeños or pepper jack cheese.

To make it gluten-free, use gluten-free bread.

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