Meet your new breakfast hero: the Savory Herb & Cheese Overnight Breakfast Casserole. It’s perfect for those mornings when you want something hearty without the early-morning hustle. Just assemble the night before, and let the oven do the work while you savor that first cup of coffee.
The backbone of this recipe is the sourdough bread. Its tangy flavor and sturdy texture are perfect for soaking up the custardy egg mixture without getting mushy. The eggs and whole milk create a rich, creamy base that holds everything together. For the cheese trifecta, we have sharp cheddar for its bold flavor, mozzarella for its gooey melt, and Parmesan for a nutty, salty kick. Fresh basil and parsley brighten the dish, while green onions add a subtle bite. A sprinkle of salt, pepper, and a touch of nutmeg round out the flavors, adding depth and warmth.
This casserole pairs wonderfully with a fresh fruit salad or a simple arugula salad dressed with olive oil and lemon. For a heartier spread, serve alongside crispy bacon or sausage links. A light mimosa or freshly squeezed orange juice makes the perfect brunch companion.
Start by greasing a 9x13-inch baking dish. This ensures our casserole will come out easily and makes cleanup a breeze. Next, take your sourdough bread and cut it into cubes. Layer these cubes in the prepared dish, creating an even base.
In a large bowl, whisk together 12 eggs, 2 cups of whole milk, 1 teaspoon of salt, 1/2 teaspoon of black pepper, and 1/4 teaspoon of nutmeg. The nutmeg might seem like a small addition, but it adds a cozy warmth that complements the cheeses beautifully.
Stir in the sharp cheddar, mozzarella, and Parmesan cheeses, but remember to save a little of each for the top. Add the fresh basil, parsley, and green onions to the egg mixture, mixing everything well.
Pour this rich, cheesy mixture evenly over your bread cubes, allowing them to soak up all that goodness. Once the bread is well-coated, sprinkle the reserved cheese over the top for a deliciously melty, golden crust.
Cover the dish with plastic wrap and pop it in the fridge overnight. This gives the flavors time to meld and the bread time to soak, resulting in a harmonious, cohesive dish.
When you’re ready to bake, preheat your oven to 350°F (175°C). Take the casserole out of the fridge and let it sit at room temperature for about 15 minutes. This helps it bake evenly. Bake it uncovered for 40-45 minutes. You'll know it’s done when the edges are golden and the center is set. Let it cool for about 5 minutes before slicing and serving.
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