As I stood in my kitchen one evening, the chill of autumn wrapping around my house, I dreamed of a breakfast that could warm both hearts and bellies. That's when I decided to whip up an Easy Overnight Breakfast Casserole. This delicious creation is not just a mouthwatering blend of savory sausage, fluffy bread, and creamy cheddar cheese; it's also a hug on a plate that you can make ahead of time. Perfect for hectic mornings or cozy brunches, this recipe offers the convenience of prepping the night before, so you can savor the delightful aroma filling your kitchen when you wake up. Plus, it's versatile enough to cater to various tastes—whether you want to keep it classic or throw in some veggies for added nutrition. Curious how to make this comforting dish a family favorite? Let's dive into the recipe!
Why Is This Overnight Breakfast Casserole Amazing?
Convenience at Its Finest: Prepare it the night before to save precious morning time and wake up to a delicious breakfast.
Customizable Delight: Tailor ingredients to suit everyone’s taste—swap sausage for veggies or choose your favorite cheese.
Fluffy & Flavorful: The combination of savory sausage and melty cheese creates a mouthwatering harmony, while the bread absorbs all those delightful flavors.
Crowd-Pleaser: This casserole is perfect for gatherings, making it an ideal dish for lazy brunches or special occasions.
Healthy Twist: Add extra veggies like spinach or bell peppers for a nutritious boost without sacrificing flavor! If you’re looking for more ideas on how to elevate this dish, don’t miss our guide on healthy breakfast casseroles.
Overnight Breakfast Casserole Ingredients
• Get ready to create a delightful brunch sensation with these simple yet essential ingredients!
For the Sausage Mixture
- Breakfast Sausage – Adds savory richness; substitute with turkey sausage or a vegetarian option if you prefer.
- Onions – Provides a sweet and aromatic base; use yellow or white onions for the best results.
For the Egg Custard
- Eggs (6) – Forms the custard base; don’t substitute for the optimal texture.
- Milk (1 and ½ cups) – Adds creaminess; non-dairy milk can be used for a vegan Overnight Breakfast Casserole.
- Mustard Powder (1 teaspoon) – Enhances flavors; optional, but adds a delightful zest.
- Salt (1 teaspoon) – Essential for seasoning; adjust according to your taste.
- Black Pepper – Provides flavor and depth; freshly ground is recommended for maximum impact.
For the Casserole Base
- Cubed Bread (4 cups) – Acts as the casserole base; day-old bread helps achieve the perfect consistency.
- Cheddar Cheese (1 cup) – For richness and flavor; can be swapped for other melting cheeses or a vegan alternative.
Feel inspired to bring this Overnight Breakfast Casserole to life and treat your family or guests to a warm and cozy morning!
Step‑by‑Step Instructions for Easy Overnight Breakfast Casserole
Step 1: Cook the Sausage
Begin by heating a large skillet over medium heat. Add the breakfast sausage and chopped onions, cooking them together for 6–8 minutes until the sausage is browned and the onions are tender. Be sure to stir occasionally for even cooking. Once done, drain any excess fat to prevent greasiness in your Overnight Breakfast Casserole.
Step 2: Prepare Egg Mixture
In a spacious mixing bowl, whisk together 6 eggs, 1 and ½ cups of milk, 1 teaspoon of mustard powder, 1 teaspoon of salt, and freshly ground black pepper to taste. Ensure all ingredients are thoroughly combined and smooth. This egg mixture will form the custard base that binds the flavors in your Easy Overnight Breakfast Casserole beautifully.
Step 3: Layer Ingredients
Grease a 9x13-inch baking dish with cooking spray or butter. Start layering by placing half of the cubed bread on the bottom. Pour the cooked sausage and onion mixture evenly over the bread, followed by half of the shredded cheddar cheese. If desired, you can add other vegetables at this stage for extra flavor. Repeat the layering process until all ingredients are used.
Step 4: Add Egg Mixture
Carefully pour the prepared egg mixture over the layered ingredients in the baking dish. Use a spatula to gently press down the bread, ensuring it absorbs the custard fully. Cover the dish tightly with plastic wrap or aluminum foil and refrigerate overnight. This soaking time allows the bread to soak up the rich flavors, creating a lovely texture.
Step 5: Bake
The next morning, preheat your oven to 350°F (175°C). Once heated, remove the cover from the baking dish and place it in the oven. Bake for 45–50 minutes, or until the top turns golden brown and a knife inserted in the center comes out clean. Allow your Easy Overnight Breakfast Casserole to cool slightly before slicing and serving. Enjoy the delightful aroma filling your kitchen!
How to Store and Freeze Overnight Breakfast Casserole
Fridge: Store any leftover Overnight Breakfast Casserole in an airtight container in the refrigerator for up to 3 days. Make sure it's cooled down before sealing to preserve texture.
Freezer: Freeze portions of the casserole in freezer-safe containers, keeping it fresh for up to 2 months. Allow it to cool completely before portioning.
Reheating: To enjoy your casserole, reheat it gently in the oven at 325°F (165°C) until warmed through, about 25-30 minutes. This helps retain its creamy texture.
Serving Suggestions: Consider garnishing with fresh herbs or a dollop of sour cream when serving leftovers for an added touch of flavor!
Expert Tips for Overnight Breakfast Casserole
Perfect Soaking Time: Ensure you refrigerate the casserole overnight; this allows the bread to absorb the egg mixture for a rich, creamy texture.
Avoid Fresh Bread: Using fresh bread can lead to a mushy casserole. Day-old or lightly dried bread absorbs the custard without falling apart.
Add Variety: Don’t be afraid to experiment! Incorporate sautéed vegetables or different cheese types into your Overnight Breakfast Casserole for added flavor and nutrition.
Check for Doneness: Keep an eye on browning; the top should be golden and the center firm. An inserted knife should come out clean when it’s perfect.
Let it Rest: Allow the casserole to cool slightly before slicing. This helps maintain its structure and makes serving easier!
Overnight Breakfast Casserole Variations
Feel free to get creative and make this Overnight Breakfast Casserole your own with these delightful variations!
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Veggie-Packed: Substitute sausage with your favorite sautéed vegetables like bell peppers, mushrooms, or spinach for a colorful twist. This addition will bring a burst of nutrition while maintaining that savory flavor.
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Dairy-Free Delight: Use non-dairy milk and a plant-based cheese to create a delicious vegan version. Your casserole will still be creamy and satisfying, perfect for any breakfast table.
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Whole Grain Goodness: Switch the cubed bread for whole grain or whole wheat bread for added fiber and flavor. This small change can give your casserole a hearty and nutritious edge!
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Spicy Kick: For those who enjoy a bit of heat, add jalapeños or red pepper flakes. It’s an easy way to elevate the flavor profile and cater to spice lovers in your family.
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Herb Infusion: Sprinkle fresh herbs like parsley, chives, or thyme into the egg mixture for an aromatic touch that will elevate your casserole's flavor.
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Southwestern Fiesta: Incorporate diced green chilies, corn, and pepper jack cheese for a vibrant Southwestern twist. Your guests will love the bold and zesty flavors!
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Cheese Blitz: Experiment with various cheeses like gouda or Swiss for unique flavor dimensions. Each cheese will bring its distinct character, making every batch an exciting surprise.
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Sweet Surprise: For a unique take, consider mixing in chopped apples or blueberries for a hint of sweetness. This combination can transform the dish into a delectable breakfast dessert.
Each of these variations not only enhances the taste but also allows you to personalize your Overnight Breakfast Casserole for any occasion! If you’re eager for more ideas, our section on healthy breakfast casseroles offers further inspiration to elevate your morning feasts.
What to Serve with Easy Overnight Breakfast Casserole
Elevate your breakfast experience by pairing your casserole with delightful side dishes that complement its rich flavors and comforting textures.
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Fresh Fruit Salad: A vibrant mix of juicy berries and tropical fruits adds a refreshing contrast to the casserole's richness.
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Crispy Bacon: The smoky crunch of bacon balances the creamy texture of the casserole, making each bite a savory delight.
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Mixed Green Salad: Tossed with a light vinaigrette, this salad introduces a crisp, refreshing element that awakens the palate.
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Avocado Toast: The creamy, buttery flavor of avocado spread on toasted bread pairs beautifully, adding a creamy element to your breakfast spread.
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Herbed Yogurt Dip: Light and tangy, this dip made with fresh herbs and creamy yogurt serves as a cool counterpoint to the warm casserole.
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Mimosa: The bubbly citrus of this brunch staple adds a celebratory touch, brightening the flavors and making your breakfast feel special.
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Homemade Cinnamon Rolls: Sweet, warm, and decadent, cinnamon rolls alongside the casserole create a delightful mix of flavors that everyone will love.
Make Ahead Options
These Easy Overnight Breakfast Casserole preparations are perfect for busy mornings! You can prep the entire casserole up to 24 hours in advance, allowing the bread to soak overnight in the egg mixture for optimal flavor and texture. Simply follow the steps to cook the sausage, layer the ingredients, and then pour the egg mixture over everything before covering tightly with plastic wrap or aluminum foil and refrigerating. To maintain quality, avoid using fresh bread, which can become mushy; instead, stick to day-old bread. When ready to serve, just preheat your oven to 350°F (175°C), bake for about 45-50 minutes, and enjoy a delightful breakfast with minimal morning hassle!
Easy Overnight Breakfast Casserole Recipe FAQs
What type of bread should I use for the Overnight Breakfast Casserole?
I recommend using day-old or slightly stale bread for the best results. Fresh bread can lead to a mushy texture as it absorbs too much liquid. You can use varieties like French, sourdough, or a mix of different types for added flavor.
How long can I store the Overnight Breakfast Casserole in the fridge?
You can store leftover casserole in an airtight container in the refrigerator for up to 3 days. Make sure to let it cool down before sealing to maintain its delightful texture.
Can I freeze my Overnight Breakfast Casserole? How?
Absolutely! To freeze, allow the casserole to cool completely after baking. Cut it into portions and place in freezer-safe containers or wrap tightly in plastic wrap and then foil. It will stay fresh for up to 2 months. When you’re ready to enjoy, thaw in the refrigerator overnight and reheat gently at 325°F (165°C) for about 25-30 minutes.
What if I have dietary restrictions—can I make this casserole vegetarian or dairy-free?
You can easily customize this casserole! Substitute the breakfast sausage with turkey sausage or omit it entirely for a vegetarian option. For a dairy-free casserole, use non-dairy milk and swap cheddar cheese for a vegan cheese alternative. The flavor will still be fantastic!
How do I know when the Overnight Breakfast Casserole is done baking?
The casserole is done when the top is golden brown, and a knife inserted in the center comes out clean. Be sure to let it cool slightly before slicing, as this will help it hold its shape better.
Can I add extra ingredients to the casserole?
Very! You can include sautéed vegetables like spinach or bell peppers to enhance the flavor and nutritional value. Feel free to mix and match with your favorite ingredients!
Easy Overnight Breakfast Casserole for a Cozy Morning Feast
Ingredients
Equipment
Method
- Heat a large skillet over medium heat. Add the breakfast sausage and chopped onions, cooking together for 6–8 minutes until browned and onions are tender. Drain excess fat.
- In a mixing bowl, whisk together eggs, milk, mustard powder, salt, and black pepper until well combined.
- Grease a 9x13-inch baking dish. Place half of the cubed bread at the bottom, add the sausage mixture and half the shredded cheese. Layer remaining bread, sausage, and top with remaining cheese.
- Pour the egg mixture over the layers in the baking dish. Press down to ensure bread absorbs the custard. Cover and refrigerate overnight.
- Preheat oven to 350°F (175°C). Bake covered for 45–50 minutes until top is golden and a knife inserted comes out clean. Allow to cool slightly before serving.
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