In the hustle and bustle of modern life, finding time to prepare a hearty breakfast can be a challenge.
As a passionate home cook and writer, I’ve curated a delightful collection of 18 Overnight Breakfast Casserole Ideas for 2025, designed to bring ease and joy to your morning routine.
These casseroles are the epitome of convenience and flavor, allowing you to prepare them the night before and simply pop them in the oven in the morning.
From savory to sweet, each recipe offers a unique blend of creativity and comfort, ensuring there’s something to please every palate.
Let’s jump right into it!
18 Overnight Breakfast Casserole
1. Classic Sausage and Egg Casserole
Start your day with the delicious Classic Sausage and Egg Casserole. Begin by browning some sausage and layering it over bread cubes in a greased baking dish.
In a separate bowl, whisk together eggs, milk, salt, and pepper until well combined. Pour this mixture over the sausage and bread. For a touch of extra flavor, sprinkle shredded cheese on top.
Cover the dish with foil and let it refrigerate overnight. This allows the flavors to meld beautifully. The next morning, preheat your oven to 350°F. Bake the casserole for 40-50 minutes or until the eggs are set and the top turns golden brown.
2. Cheesy Hash Brown Casserole
Indulge in a comforting Cheesy Hash Brown Casserole that’s perfect for breakfast. Start by mixing frozen hash browns with shredded cheddar cheese, diced onions, eggs, and milk in a large bowl.
Pour this cheesy mixture into a greased casserole dish, then sprinkle extra cheese on top for added yumminess.
Cover the dish and let it refrigerate overnight to enhance the flavors. In the morning, set your oven to 375°F and bake the casserole for 45 minutes until the top is golden and bubbly.
3. Veggie Lovers’ Egg Bake
Kickstart your day with the Veggie Lovers’ Egg Bake, packed with nutritious vegetables. Chop up some bell peppers, mushrooms, spinach, and onions. In a large bowl, combine these veggies with eggs, milk, salt, and pepper.
Pour the mixture into a greased baking dish and sprinkle with shredded cheese on top. Cover the dish and allow it to refrigerate overnight.
When morning comes, preheat your oven to 350°F. Bake the casserole for 35-45 minutes until the eggs are just set, and the top is golden.
4. Ham and Swiss Croissant Casserole
Experience the delightful taste of a Ham and Swiss Croissant Casserole. Begin by slicing croissants and layering them with diced ham and Swiss cheese in a baking dish.
In a bowl, mix eggs, milk, a bit of mustard, salt, and pepper. Pour this creamy mixture over the croissants. Cover the dish and refrigerate overnight to let the flavors blend perfectly.
The next morning, preheat your oven to 350°F. Bake the casserole for 40 minutes until the top is golden and the eggs are perfectly set.
5. Spinach and Feta Breakfast Casserole
Start your day with this Mediterranean-inspired delight! Mix fresh spinach, crumbled feta, and sun-dried tomatoes with eggs and milk for a rich blend of flavors.
Pour the mixture into a greased baking dish, ensuring everything is evenly distributed. Cover the dish and let it rest in the refrigerator overnight.
When morning comes, preheat your oven to 350°F and bake the casserole for 35-45 minutes, or until the eggs are set to perfection.
6. Cinnamon Roll French Toast Bake
Indulge in the sweet comfort of this dessert-like breakfast! Begin by cutting cinnamon rolls into bite-sized pieces and arranging them in a greased baking dish.
Whisk together eggs, milk, vanilla, and a hint of cinnamon, then pour this fragrant mixture over the rolls. Cover and refrigerate it overnight to let the flavors meld.
In the morning, bake at 350°F for 30-35 minutes until the casserole is golden and set.
7. Loaded Bacon and Potato Casserole
For those who crave something savory, this flavor-packed casserole is a must-try. Combine diced potatoes, crispy bacon, shredded cheese, eggs, and milk in a large bowl.
Once mixed, pour into a greased baking dish and cover. Refrigerate overnight to allow the flavors to develop.
The next day, bake at 375°F for 45-50 minutes until the top is golden and bubbly. The harmony of crispy bacon with creamy cheese makes this dish a standout choice for bacon lovers.
8. Blueberry Cream Cheese French Toast Casserole
This elegant casserole combines the freshness of blueberries with creamy bites of cream cheese, creating a perfect brunch dish.
Begin by layering cubed bread, sweet blueberries, and chunks of cream cheese in a greased baking dish. Pour a mixture of eggs, milk, and vanilla over the layers, ensuring even coverage.
Refrigerate overnight, allowing the bread to soak up the creamy mixture. In the morning, bake at 350°F for 40-45 minutes until the top is beautifully golden.
9. Mexican Chorizo and Pepper Casserole
Discover the vibrant flavors of Mexican Chorizo and Pepper Casserole, a dish that promises a thrilling start to your day. Begin by browning spicy chorizo until it releases its tantalizing aroma.
Mix it with colorful diced bell peppers, onions, rich cheese, eggs, and creamy milk in a large bowl. Pour this exciting blend into a greased baking dish, and let it rest in the refrigerator overnight.
Wake up to a new morning by baking this casserole at 350°F for about 40-45 minutes, until the eggs are perfectly set.
10. Apple Cinnamon Oatmeal Bake
Start your day with the comforting flavors of Apple Cinnamon Oatmeal Bake. In a mixing bowl, combine wholesome oats, sweet diced apples, aromatic cinnamon, eggs, creamy milk, and a drizzle of honey.
Pour this mixture into a greased baking dish, cover it, and let it rest in the refrigerator overnight for the flavors to meld beautifully.
In the morning, bake at 350°F for around 35-40 minutes until the oatmeal sets into a warm, inviting casserole.
11. Hash Brown Sausage Casserole
Indulge in the hearty flavors of Hash Brown Sausage Casserole, a savory breakfast classic. Begin by layering frozen hash browns and browned, flavorful sausage in a greased baking dish.
Generously sprinkle shredded cheese over the top for that cheesy goodness. In a separate bowl, whisk together eggs, creamy milk, and a dash of salt and pepper, then pour this over the layers.
Leave it in the refrigerator overnight to let the flavors infuse. Bake it at 375°F for 40-45 minutes until the top is golden and the casserole is set.
12. Sweet Potato and Bacon Casserole
Experience a symphony of flavors with the Sweet Potato and Bacon Casserole. Begin by roasting diced sweet potatoes until they’re tender and caramelized.
In a bowl, mix these sweet delights with crispy crumbled bacon, sweet caramelized onions, eggs, and creamy milk. Pour this mixture into a greased baking dish, then refrigerate overnight to allow the flavors to meld.
When morning arrives, bake the casserole at 350°F for 40-45 minutes until everything is perfectly set.
13. Broccoli and Cheddar Casserole
Start your day with this Broccoli and Cheddar Casserole, a delicious way to sneak in some veggies at breakfast!
Begin by mixing fresh broccoli florets, a generous amount of shredded cheddar cheese, a few eggs, and some milk in a large bowl. Pour this creamy mixture into a greased baking dish, ensuring it’s evenly spread.
Cover it tightly and place it in the refrigerator overnight. In the morning, heat your oven to 350°F and bake the casserole for 30-35 minutes, or until the eggs are fully set.
14. Banana Nut French Toast Bake
Indulge in the sweet and nutty flavors of this Banana Nut French Toast Bake. Begin by layering cubed bread in a greased baking dish, then add sliced bananas and a handful of chopped nuts.
In a separate bowl, whisk together eggs, milk, and vanilla extract. Pour this creamy mixture over the layers in your dish, ensuring every piece of bread absorbs the liquid.
Cover the dish and refrigerate it overnight. When ready to bake, preheat your oven to 350°F and bake for 40-45 minutes until golden and delicious.
15. Mushroom and Gruyère Breakfast Casserole
Elevate your breakfast with this Mushroom and Gruyère Breakfast Casserole. Start by sautéing mushrooms until they’re tender and fragrant. In a bowl, mix the cooked mushrooms with rich Gruyère cheese, a few eggs, and some milk.
Pour this savory blend into a greased baking dish. Cover it and let it rest in the refrigerator overnight to intensify the flavors.
The next morning, preheat your oven to 350°F and bake the casserole for 30-35 minutes until the eggs are fully set and the top is slightly browned.
16. Pumpkin Spice French Toast Casserole
Capture the essence of fall with this delightful Pumpkin Spice French Toast Casserole. Mix smooth pumpkin puree, a blend of warm spices, a few eggs, milk, and cubed bread in a greased baking dish.
Make sure every piece of bread is coated with the rich pumpkin mixture. Cover and place in the refrigerator overnight, allowing the spices to meld beautifully.
When you’re ready to bake, preheat your oven to 350°F and cook for 40-45 minutes until the top is golden and fragrant.
17. Italian Sausage and Mozzarella Casserole
Experience the comforting warmth of Italy with the Italian Sausage and Mozzarella Casserole. Begin by browning the Italian sausage in a skillet, releasing its savory aroma.
In a mixing bowl, combine the sausage with melted mozzarella cheese, beaten eggs, milk, and freshly chopped basil leaves. Pour this delightful mixture into a greased baking dish, ensuring every corner is filled with these rich flavors.
Cover and let it rest in the refrigerator overnight, allowing the ingredients to meld together. In the morning, bake at 350°F for 40 minutes until the top is beautifully golden and the cheese is bubbling.
18. Savory Bagel and Lox Casserole
Delight in a sophisticated twist on a classic breakfast with the Savory Bagel and Lox Casserole. Start by layering chunks of bagel pieces in a greased baking dish, creating the perfect foundation.
Add luscious layers of smoked salmon and spread pockets of cream cheese throughout, ensuring every bite is indulgent. Sprinkle with capers for that tangy zest and a sprinkle of dill for a fragrant finish.
In a separate bowl, whisk together eggs and milk, and gently pour this mixture over the bagel creation, making sure everything is soaked in goodness.
Hi, I’m Ashley Miller, a wife, a busy mom, and someone who loves to share all the things that make life a little more fun and beautiful.
From easy DIY projects, delicious recipes, and chic hairstyles to nail ideas and home decor tips, I share everything I’ve learned and love.
My goal is to inspire other women to explore their creativity and make their homes even more special.
