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    Home » Breakfast Recipes

    Overnight Breakfast Casserole

    Modified: May 14, 2025 · Published: Feb 8, 2024 by Vicky · This post may contain affiliate links · 4 Comments

    260 shares
    Jump to Recipe Jump to Video

    This Overnight Breakfast Casserole is the ultimate time-saver. This cheesy egg dish with sausage and croutons is perfect for hectic mornings or lazy weekends. It is one of my favorite Casserole Recipes because it is breakfast without the morning fuss.

    cooked overnight breakfast casserole.
    Jump to:
    • Make Ahead Breakfast Casserole
    • Ingredients for Overnight Breakfast Casserole
    • Can You Make a Casserole With Raw Eggs Ahead of Time?
    • How To Make An Overnight Breakfast Casserole
    • Tips for Making a Breakfast Casserole Ahead of Time
    • FAQs For Overnight Breakfast Casserole
    • What Can I Serve With a Breakfast Casserole?
    • The Best Casserole Products on Amazon
    • Easy Breakfast Casseroles
    • 📖 Recipe

    If you enjoy this recipe, try our Slow Cooker Breakfast Recipes.

    Make Ahead Breakfast Casserole

    This breakfast casserole that can be prepared the night before is not just a crowd-pleaser; it's a time saver. You assemble it the night before and then pop it in the oven the next morning or when you are ready for brunch. What could be easier?

    slice of overnight breakfast casserole on plate.

    Ingredients for Overnight Breakfast Casserole

    • Ground breakfast sausage: I used pork sausage which gives a juicy and hearty flavor to the casserole. You can also use ground turkey or chicken sausage to provide protein to the recipe.
    • Mustard powder: Dry mustard helps to balance the rich flavors of the pork and cheese.
    • Eggs: I used large eggs which cook up nice and fluffy in this recipe.
    • Milk: Adds creaminess and moisture to the casserole. You can use whole milk or 2%.
    • Garlic and cheese croutons: These provide a cheesy and garlic flavor, plus they save you time preparing bread for the casserole.
    • Cheddar cheese: Shredded. I used a sharp cheddar cheese. You can use other cheese varieties as well such as Monterey Jack cheese or Mexican cheese.
    • Salt and Pepper: to taste.
    overnight breakfast casserole ingredients.

    Can You Make a Casserole With Raw Eggs Ahead of Time?

    You might want to prepare a casserole ahead of time for many reasons. Maybe you're planning a lazy Sunday brunch, or you're just trying to simplify busy weekday mornings.

    You can make a casserole with raw eggs ahead of time. It is a great way to save time and reduce stress. It feels good to wake up and remember that a hearty and delicious breakfast is already prepared.

    You will follow the recipe as normal, but hold off on baking it. Instead, cover your casserole dish and store it in the refrigerator. It's essential to keep the dish refrigerated until it's ready to be cooked. This keeps the eggs safe for consumption.

    How To Make An Overnight Breakfast Casserole

    One of the reasons people love overnight casseroles is the convenience. You can prepare them the evening before. This means you get to wake up to a hassle-free morning with a delicious meal to be enjoyed. I especially love a casserole like this for Christmas breakfast.

    steps for making an overnight breakfast casserole.

    Refrigerating the egg bake overnight allows the bread to soak up the egg mixture and flavors. Simply cover your casserole dish and place it in the refrigerator until the next morning when you are ready to eat.

    uncooked overnight breakfast casserole in pan.

    In the morning all there is to do is preheat your oven and cook. This easy casserole cooks for 45 minutes covered in foil and then 20 minutes uncovered.

    If you'd like you can add some chopped green onions for garnish when the casserole is ready.

    overnight breakfast casserole in casserole pan.

    Tips for Making a Breakfast Casserole Ahead of Time

    Tip 1: Feel free to substitute a hot or spicy sausage to add some heat to this dish.

    Tip 2: You can customize this casserole. You can bulk it up with vegetables such as bell peppers, mushrooms, or onions. These veggies add both flavor and nutrition. Is sausage not your thing? Swap it for an equal amount of bacon or ham.

    FAQs For Overnight Breakfast Casserole

    How Long Can a Breakfast Casserole Sit in the Fridge Before Baking?

    Luckily you've got a pretty decent window to work with. You should cook the casserole within 24 hours after putting it together to ensure it is fresh.

    Why 24 hours? This timeframe keeps everything safe for consumption. When you are dealing with perishable items like eggs and dairy, timing is important.

    What's the Best Way to Store This Overnight Breakfast Casserole After Cooking?

    When you are done eating and ready to put away the leftovers, you can store this casserole in an airtight container and refrigerate it for up to 4 days.

    You can also freeze leftovers from this recipe which is a big help if you don't think you will be eating it in the near future. To freeze this casserole, divide it into individual portions and wrap portions tightly in foil or plastic wrap.

    You can also place the servings in a zip-top bag. Overnight casserole can be stored in the freezer for up to 2 months after it's been cooked.

    When you're ready to eat it, simply thaw it overnight in the refrigerator and then reheat it in the microwave until it's cooked through.

    slice of overnight breakfast casserole.

    What Can I Serve With a Breakfast Casserole?

    I've got a few suggestions for you that are easy to make and pair perfectly with your hearty casserole.

    • Carrot Muffin Recipe - These muffins are sweet, moist, and packed full of flavor. They are the perfect balance for a savory casserole. You'll love how they are a sweet treat that is filled with healthy ingredients.
    • Zucchini Pecan Bread - This bread is moist, flavorful, and loaded with shredded zucchini and crunchy pecans. Since the bread is slightly sweet, it is the perfect accompaniment to your savory casserole.
    • Peanut Butter Flourless Cookies - With just a few simple ingredients - peanut butter, sugar, an egg, and vanilla extract, these cookies come together in no time. They're a sweet way to round out your breakfast.
    • Easy Overnight French Toast Casserole from Mommy Evolution -Having this casserole is like eating dessert for breakfast. Plus, you can prepare it the night before, which makes for a hassle-free morning.

    The Best Casserole Products on Amazon

    Looking for the perfect casserole dish or carrier? Look no further. Amazon has a ton of products that will arrive promptly so you can get started cooking. Enjoy my casserole must-haves!

    Shior Insulated Casserole Carrier 4 Hot or Cold Food - Double Decker, Expandable w/ Plates & Utensils Compartment - Waterproof Thermal Food Container for Potluck, Picnics, etc - 16x11x8 Inches - GrayShior Insulated Casserole Carrier 4 Hot or Cold Food - Double Decker, Expandable w/ Plates & Utensils Compartment - Waterproof Thermal Food Container for Potluck, Picnics, etc - 16x11x8 Inches - GrayShior Insulated Casserole Carrier 4 Hot or Cold Food - Double Decker, Expandable w/ Plates & Utensils Compartment - Waterproof Thermal Food Container for Potluck, Picnics, etc - 16x11x8 Inches - GrayPyrex Basics 3 QT Glass Baking Dish With Plastic Lid, Casserole Dish, Glass Food Container, Oven, Freezer And Microwave Safe, Clear ContainerPyrex Basics 3 QT Glass Baking Dish With Plastic Lid, Casserole Dish, Glass Food Container, Oven, Freezer And Microwave Safe, Clear ContainerPyrex Basics 3 QT Glass Baking Dish With Plastic Lid, Casserole Dish, Glass Food Container, Oven, Freezer And Microwave Safe, Clear ContainerKitchenAid Universal Nesting Plastic Mixing Bowls, Set Of 3, 2.5 quart, 3.5 quart, 4.5 quart, Non Slip Base with Easy Pour Spout to Reduce Mess, Dishwasher Safe, Empire RedKitchenAid Universal Nesting Plastic Mixing Bowls, Set Of 3, 2.5 quart, 3.5 quart, 4.5 quart, Non Slip Base with Easy Pour Spout to Reduce Mess, Dishwasher Safe, Empire RedKitchenAid Universal Nesting Plastic Mixing Bowls, Set Of 3, 2.5 quart, 3.5 quart, 4.5 quart, Non Slip Base with Easy Pour Spout to Reduce Mess, Dishwasher Safe, Empire RedHOMETALL 40 PCS Food Storage Containers with Lids Airtight, 100% Leakproof Plastic Meal-Prep Containers Reusable(20 Containers & 20 Lids),Microwave and Dishwasher Safe, Includes Labels & PenHOMETALL 40 PCS Food Storage Containers with Lids Airtight, 100% Leakproof Plastic Meal-Prep Containers Reusable(20 Containers & 20 Lids),Microwave and Dishwasher Safe, Includes Labels & PenHOMETALL 40 PCS Food Storage Containers with Lids Airtight, 100% Leakproof Plastic Meal-Prep Containers Reusable(20 Containers & 20 Lids),Microwave and Dishwasher Safe, Includes Labels & PenChefAide 4 Pieces Silicone Spatula Set, Food Grade Rubber Spatula, Upgrade Strong Handle with Ergonomic Grip, Heat Resistant Up to 600°F for Nonstick Cookware, CookingChefAide 4 Pieces Silicone Spatula Set, Food Grade Rubber Spatula, Upgrade Strong Handle with Ergonomic Grip, Heat Resistant Up to 600°F for Nonstick Cookware, CookingChefAide 4 Pieces Silicone Spatula Set, Food Grade Rubber Spatula, Upgrade Strong Handle with Ergonomic Grip, Heat Resistant Up to 600°F for Nonstick Cookware, Cooking5PCS Silicone Rubber Spatula Set, VITUER Food Grade BPA-Free Spatulas for kitchen Use, Heat Resistant Spatula for Cooking & Baking, Dishwasher Safe5PCS Silicone Rubber Spatula Set, VITUER Food Grade BPA-Free Spatulas for kitchen Use, Heat Resistant Spatula for Cooking & Baking, Dishwasher Safe5PCS Silicone Rubber Spatula Set, VITUER Food Grade BPA-Free Spatulas for kitchen Use, Heat Resistant Spatula for Cooking & Baking, Dishwasher Safe

     

    Easy Breakfast Casseroles

    Looking for more delicious casseroles to start the day off right?

    • Easy French Toast Casserole
    • Tater Tot Casserole
    • Sausage Breakfast Casserole
    • Cheesy Hash Brown Casserole

    📖 Recipe

    Overnight Breakfast Casserole

    Vicky
    Wake up to the aroma of a delightful overnight breakfast casserole. Crafted with savory pork sausage, tangy cheddar, creamy milk, and a crunch of garlic croutons – perfect for a satisfying start to your day. Prepare ahead for a stress-free morning treat!
    5 from 5 votes
    Print Recipe Pin Recipe
    Prep Time 20 minutes mins
    Cook Time 1 hour hr 5 minutes mins
    Refrigerated time 8 hours hrs
    Total Time 9 hours hrs 25 minutes mins
    Course Breakfast
    Cuisine American
    Servings 8
    Calories 430 kcal

    Video

    Ingredients
      

    • 1 pound Ground pork sausage
    • 1 ½ teaspoon Mustard powder
    • 4 eggs large
    • 2 cups milk
    • 5 ounces garlic and cheese croutons
    • 8 ounces Cheddar cheese shredded

    Instructions
     

    • In a skillet, brown sausage and make sure to drain the excess grease.
    • In a large bowl, whisk together the mustard powder, eggs, and milk until well combined.
    • Add the cooked sausage, croutons, and cheese to the bowl, stirring to make sure everything is evenly distributed.
    • Pour into a greased baking dish, cover and store in the refrigerator.
    • The next morning, cover in foil, bake in an oven preheated to 350 degrees F for 45 minutes. Reduce oven temperature to 325, uncover and bake for another 20 minutes.

    Notes

    • Don't hesitate to swap in a hot or spicy sausage if you prefer to add a bit of a kick to this meal.
    • You can add veggies like bell peppers, mushrooms, or onions. These additions not only enhance the taste but also provide healthy nutrients. Not a fan of sausage? Replace it with an equivalent amount of bacon or ham.
    This nutritional information is approximate and was calculated using online calculators. Your nutritional information may vary depending on numerous factors.
     

    Nutrition

    Calories: 430kcalCarbohydrates: 17gProtein: 22gFat: 30gSaturated Fat: 13gPolyunsaturated Fat: 3gMonounsaturated Fat: 11gTrans Fat: 0.1gCholesterol: 158mgSodium: 724mgPotassium: 309mgFiber: 1gSugar: 3gVitamin A: 544IUVitamin C: 0.4mgCalcium: 307mgIron: 2mg
    Keyword overnight breakfast casserole
    Tried this recipe?Let us know how it was!

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    Comments

      5 from 5 votes (1 rating without comment)

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      Recipe Rating




    1. Tayler says

      February 08, 2024 at 3:08 pm

      5 stars
      Mornings can be hard, so I’ve been looking for ways to prep breakfast ahead of time. This casserole looks perfect and I can’t wait to try it!

      Reply
    2. Elisa says

      February 08, 2024 at 2:31 pm

      5 stars
      Love this Overnight Breakfast Casserole recipe, looks delicious and easy to make, perfect for a big family breakfast and to save time in the morning. Thanks for sharing 🙂

      Reply
    3. Sky says

      February 08, 2024 at 1:58 pm

      5 stars
      This is a fantastic recipe! My kiddos are already asking for it again. Thanks for sharing!

      Reply
    4. Kelley says

      February 08, 2024 at 12:52 pm

      5 stars
      We made this yesterday and baked today and oh my goodness this was so good! Everyone loved it and had seconds!

      Reply
    Vicky from Mess for Less

    I'm Vicky, the founder of Mess For Less, which I started in 2011 to share easy, family-friendly recipes. With over a decade of experience as a home chef and recipe developer, I love creating meals that bring people together. I also design play and learning activities for kids, using my background as a former teacher with a Master’s degree in education. Learn more about me.

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