Breakfast Casserole Recipe with Bread

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This Breakfast Casserole Recipe with Bread is more than just a meal—it’s comfort food at its finest. I remember the first time I made this casserole: it was a chilly Sunday morning, and my house was filled with family eagerly waiting for breakfast. With a little creativity and the ingredients I already had in my pantry, I whipped up this easy casserole that instantly became a hit!

How to make Breakfast Casserole with Bread

A Breakfast Casserole with Bread is a baked, all-in-one morning dish where chunks of bread are soaked in a savory egg mixture and combined with ingredients like cheese, meat, and vegetables—then baked until golden and set.

Ingredients

Base Ingredients:

• 6-8 slices of bread (white, whole wheat, sourdough, or even leftover rolls): The bread serves as the sturdy, flavorful base. It’s best to use slightly stale bread for a better texture, but fresh bread works too.
• 6 large eggs: Eggs bind the casserole together and give it a creamy texture.
• 2 cups milk: Whole milk works best for richness, but you can use 2%, half-and-half, or even a dairy-free substitute like almond milk.

Flavorful Add-Ins:

• 1 pound cooked breakfast sausage or bacon, crumbled (or a plant-based alternative): For savory, meaty goodness.
• 1 cup shredded cheese (cheddar, mozzarella, pepper jack, or a mix): Cheese melts beautifully on the casserole, adding a gooey, golden layer of flavor.
• Optional: 1 small onion, diced or 1/2 cup bell peppers, chopped: For an extra burst of flavor and texture.
• Optional: A handful of fresh spinach, kale, or mushrooms for a healthy twist.

Seasonings:

• 1/2 teaspoon salt
• 1/4 teaspoon ground black pepper
• Optional: A pinch of garlic powder, onion powder, paprika, or dried herbs (like parsley or thyme) for added flavor.

Instructions

Follow these steps for a foolproof breakfast casserole:

1. Preheat your oven to 350°F (175°C).
2. Grease a 9×13-inch baking dish with butter or non-stick cooking spray to prevent sticking.
3. Tear or cut bread into small cubes (about 1-inch pieces). If your bread is fresh, you can leave it out for about 15-20 minutes to dry slightly, which helps it absorb the egg mixture better.
4. Spread the bread cubes evenly in the greased baking dish.
5. Sprinkle the cooked and crumbled sausage or bacon evenly over the bread.
6. If you’re using veggies like onions or bell peppers, add them at this stage.
7. Sprinkle shredded cheese across the top for a rich, cheesy layer.
8. In a medium-sized bowl, whisk together the eggs, milk, salt, and pepper until smooth. For extra flavor, stir in a pinch of garlic powder or your favorite dried herbs.
9. Pour the egg mixture evenly over the bread and toppings in the casserole dish. Make sure all the bread pieces are soaked in the liquid.
10. For the best texture and flavor, let the casserole sit uncovered for 15-20 minutes to allow the bread to absorb the egg mixture. If you’re prepping ahead, cover the dish and refrigerate overnight for an easy morning bake.
11. Bake in the preheated oven for 40-45 minutes, or until the eggs are fully set and the top turns golden brown. To check for doneness, insert a knife or toothpick into the center—it should come out clean.
12. Let the casserole cool for 5-10 minutes before slicing into squares. Serve warm, and enjoy!

Helpful Tips for Success

• Experiment with different types of cheese, like Gouda or feta, to add variety.
• Swap the meat with diced ham, chorizo, or a vegetarian protein like plant-based sausage.
• Slightly stale bread absorbs the egg mixture more effectively, resulting in a firm yet creamy casserole. If your bread is fresh, you can toast the cubes lightly in the oven for 5-7 minutes at 300°F before assembling.
• This recipe is perfect for meal prep! Assemble the casserole the night before and store it in the fridge. In the morning, pop it straight into the oven and bake as directed.

Ingredients Substitutes

One of the best things about a breakfast casserole recipe is its flexibility. If you’re missing an ingredient or catering to different dietary needs, you can easily swap out or modify components to suit your preferences.

1. Bread Alternatives

Bread is fundamental to this casserole, as it acts as the base that absorbs all the eggy goodness. However, you don’t need to stick to plain white bread. Try these substitutes:

• Whole Wheat or Multigrain Bread: Adds extra fiber and nutrients while maintaining texture and flavor.
• Sourdough Bread: For a tangier taste, use sourdough, which can add depth of flavor to the casserole.
• Croissants or Brioche: If you’re after a rich, buttery texture, croissants or brioche work wonderfully, though they’ll make the dish a little more indulgent.
• Gluten-Free Bread: For a gluten-free option, opt for a sturdy, store-bought gluten-free bread.
• Leftover Rolls or Buns: If you have leftover dinner rolls, hamburger buns, or sandwich bread, they work great too!

2. Egg Substitutes

Eggs are the binding ingredient in this recipe, but they can be swapped for dietary restrictions or allergies:

• Flax or Chia Eggs: Mix 1 tablespoon of flaxseed or chia seeds with 3 tablespoons of water per egg. Let it sit for 5 minutes until it thickens.
• Silken Tofu: Blend 1/4 cup of silken tofu for every egg required. This works well for vegan or egg-free versions.
• Egg Replacer Powder: Use a store-bought egg replacer product as directed on the packaging.
• Unsweetened Applesauce or Mashed Banana: Suitable for sweeter breakfast casseroles or savory casseroles with complementary ingredients. Use 1/4 cup per egg.

3. Milk Substitutes

Milk adds creaminess and helps soak the bread. If you don’t have milk or have dietary limitations, here are alternatives:

• Dairy-Free Options: Use almond, soy, oat, rice, coconut, or cashew milk (unsweetened and unflavored). Oat milk is especially creamy and works well.
• Half-and-Half or Heavy Cream: For a richer casserole, swap milk with half-and-half or heavy cream (or a mix of milk and cream).
• Water with Butter: If you don’t have milk, mixing 1 cup of water with 1 tablespoon of melted butter can mimic the fat content, though it won’t be as creamy.

4. Cheese Substitutes

Cheese provides a gooey, savory layer, but you can get creative here:

• Dairy-Free Cheese: Use vegan shredded cheese (brands like Daiya or Violife) if you’re avoiding dairy.
• Alternative Cheese Varieties: Beyond cheddar, try Monterey Jack, mozzarella, pepper jack, gouda, feta, or parmesan for different flavors.
• No Cheese Option: Skip the cheese altogether. The casserole will still taste great because the eggs and bread provide enough structure.

5. Meat Substitutes

Bacon or sausage is the classic protein in breakfast casseroles, but there are many alternatives:

• Ham or Deli Meat: Diced ham or slices of deli turkey, chicken, or beef work wonderfully. They’re a great way to use leftovers.
• Plant-Based Meats: Use crumbled plant-based sausage or bacon (such as Beyond Meat or MorningStar Farms) for a vegetarian or vegan option.
• Shredded Chicken or Turkey: For a lighter protein, use cooked and shredded chicken or turkey.
• Chickpeas or Black Beans: Add a plant-based protein boost with canned chickpeas or black beans.

Final Thoughts

This Breakfast Casserole with Bread is a true crowd-pleaser—loaded with flavor, easy to customize, and so simple to make in advance.

More Breakfast Recipes:

• Breakfast Casserole with Biscuits