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As I savored the aroma wafting through my kitchen, memories of lazy Sunday mornings flooded my mind. That’s when I realized how much I cherish a hearty breakfast casserole. The Overnight Sausage Egg Casserole has become my go-to for turning busy mornings into something special. This creamy, savory dish combines layers of bread, zesty sausage, and melty cheese, making it a high-protein, make-ahead breakfast that’s perfect for serving a crowd or enjoying solo. Plus, it’s wonderfully customizable, so you can swap ingredients to suit your taste or dietary needs. Imagine waking up to the delightful image of this golden, bubbling casserole waiting for you in the fridge—doesn’t that sound tempting?
Why is this casserole a breakfast must?
Convenient Make-Ahead: Simply prep the casserole the night before, saving you precious time on busy mornings.
High Protein Goodness: Packed with protein from the sausage and eggs, this dish keeps you full and energized.
Customizable Delight: Swap in turkey sausage or add vegetables like spinach for a personal touch that caters to your cravings.
Irresistible Flavor: The creamy custard base and melty cheese create a flavor profile that’s rich and satisfying.
Crowd-Pleaser: Ideal for brunch gatherings or family breakfasts, everyone will love this hearty dish.
Don’t forget to check out my Egg Hashbrown Casserole for another delicious breakfast option!
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Overnight Sausage Egg Casserole Ingredients
For the Casserole
- Medium Pork Sausage – Provides the main protein and flavor; feel free to swap with ground turkey or chicken for a lighter option.
- Onion – Adds sweetness and depth; shallots or green onions can be used for a milder flavor.
- Eggs – Forms the creamy custard base; mix whole eggs with egg whites for a lower cholesterol version.
- Whole Milk – Contributes creaminess and moisture; you can opt for 2% milk as a lighter alternative.
- Cheddar Cheese – Essential for melty goodness on top; using freshly shredded cheese enhances both flavor and texture.
- Dry Mustard – Adds subtle warmth; can be omitted if you don’t have it on hand.
- Salt and Pepper – Simply season to taste.
- Bread Cubes (brioche, whole-grain, etc.) – Creates the structural base while absorbing the custard; gluten-free varieties work well if needed.
Optional Add-Ins
- Vegetables (bell peppers, spinach, mushrooms) – Incorporate for added nutrition and color; sautéed vegetables blend beautifully with the egg mixture.
- Alternative Proteins – Try swapping in lean ground beef or different types of sausage for unique flavors; this keeps the Overnight Sausage Egg Casserole exciting.
Perfect for bustling mornings or relaxed brunches, this casserole will surely delight your taste buds!
Step‑by‑Step Instructions for Overnight Sausage Egg Casserole
Step 1: Cook Sausage and Onion
Start by heating a large skillet over medium heat. Add the medium pork sausage and diced onion, cooking for about 5-7 minutes until the sausage is browned and the onion becomes translucent. Stir occasionally to break up the sausage and ensure even cooking. Once cooked, drain any excess fat and set the mixture aside to cool.
Step 2: Prepare Egg Mixture
In a large mixing bowl, crack 8 eggs and whisk them until fully blended. Gradually add in 2 cups of whole milk, 2 cups of shredded cheddar cheese, 1 teaspoon of dry mustard, and a pinch of salt and pepper. Mix thoroughly until combined, then gently fold in the cooked sausage and onion mixture for an even distribution of flavors in your Overnight Sausage Egg Casserole.
Step 3: Assemble Casserole
Lightly spray a 9×13-inch baking dish with cooking oil to prevent sticking. Next, pour in approximately 4 cups of cubed bread, ensuring an even layer at the bottom of the dish. Carefully pour the egg mixture over the bread cubes, ensuring every piece is moistened. Use a spatula to gently press down the bread, allowing it to soak up the custard.
Step 4: Refrigerate Overnight
Cover the baking dish tightly with plastic wrap, making sure no air escapes. Place the casserole in the refrigerator for at least 8-12 hours, allowing the bread to absorb the egg mixture fully. This soaking time is crucial for achieving the perfect custard-like texture in your Overnight Sausage Egg Casserole.
Step 5: Bake
The following morning, preheat your oven to 350°F (175°C). Remove the plastic wrap from the casserole and bake it uncovered for 50 minutes to 1 hour. You’ll know it’s ready when the eggs are set and the top has a beautiful golden brown color. Allow the casserole to rest for about 5 minutes before slicing and serving to enhance the flavors.
What to Serve with Overnight Sausage Egg Casserole
Start your morning off right by elevating your meal with delightful side dishes and drinks that bring harmony to this savory breakfast.
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Fresh Fruit Salad: A vibrant mix of seasonal fruits adds a refreshing touch, balancing the richness of the casserole beautifully.
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Light Green Salad: Crisp greens drizzled with lemon vinaigrette provide a zesty contrast, enhancing the dish’s creaminess while keeping things light.
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Crispy Bacon or Sausage Links: For those who desire a little extra protein, crispy bacon or savory sausage links keep the hearty breakfast theme going strong. The salty crunch pairs perfectly with the fluffy casserole.
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Creamy Avocado Toast: Spread ripe avocado on toasted sourdough for a creamy, flavorful addition that pairs well with the casserole’s taste, elevating your breakfast experience.
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Roasted Vegetables: Offer roasted asparagus or bell peppers for added nutrients and vibrant colors on your plate. They lend a lovely earthy contrast to the creamy casserole.
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Honey-Glazed Biscuits: Buttery, sweet biscuits with a touch of honey are an adorable complement. Their rich texture balances out the savory elements of the casserole.
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Iced Coffee or Tea: A refreshing iced coffee or iced herbal tea gives a nice caffeine boost while keeping your palate refreshed alongside your breakfast casserole.
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Orange Juice: A glass of fresh-squeezed orange juice adds a bright and tangy note, enhancing the overall flavor profile and refreshing your senses with every sip.
Make Ahead Options
Preparing the Overnight Sausage Egg Casserole in advance is a game-changer for busy mornings! You can assemble the entire casserole up to 24 hours ahead of time. Simply prepare the sausage, onion, and egg mixture, then layer it with the bread cubes in a greased dish. Cover it tightly with plastic wrap and refrigerate overnight, allowing the ingredients to meld together beautifully for maximum flavor. This soaking time is essential for achieving that delightful custard-like texture. When you’re ready to bake, remove the wrap and pop it in the oven, letting it cook for 50 minutes to 1 hour until golden and set. With this make-ahead option, your breakfast will be just as delicious and ready to enjoy with minimal effort!
Overnight Sausage Egg Casserole Variations
Feel free to let your creativity shine as you customize this delightful casserole to suit your tastes!
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Protein Swap: Replace medium pork sausage with lean ground beef or chicken for a lighter yet hearty version. You’ll find that the flavor is just as satisfying!
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Vegetable Boost: Add sautéed bell peppers, spinach, or mushrooms for a colorful, nutritious kick. These vibrant veggies blend seamlessly into the custard while enhancing the dish’s flavor.
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Cheese Variety: Experiment with different cheeses like pepper jack or mozzarella to change up the flavor profile. Each cheese brings its unique twist to the creamy goodness.
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Gluten-Free Option: Use gluten-free bread cubes to make this casserole suitable for those with dietary restrictions. It maintains its delicious texture and flavor without any fuss.
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Spicy Kick: For heat lovers, toss in diced jalapeños or sprinkle some red pepper flakes into the egg mixture. This adds an exhilarating warmth that takes the dish to the next level.
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Herb Infusion: Enhance the flavor by adding fresh herbs like chives, parsley, or thyme. They uplift the casserole with their aromatic essence, making every bite a fragrant experience.
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Breakfast Burrito Style: Consider adding black beans and corn for a Southwest-style twist. You can even serve it with salsa on the side for a delightful breakfast fiesta!
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Double the Cheesy Goodness: Layer some cheese in between the bread cubes before pouring the egg mixture over for an extra cheesy surprise throughout. Who doesn’t love a melty, cheesy center?
As you explore these variations, don’t forget to check out my Cheesy Loaded Meatloaf Casserole for another comforting option, and to inspire your culinary journey!
How to Store and Freeze Overnight Sausage Egg Casserole
Fridge: Store any leftover casserole in an airtight container in the refrigerator for up to 3-4 days, making it easy to enjoy a hearty breakfast throughout the week.
Freezer: For long-term storage, freeze the unbaked casserole for up to 2 months. Wrap it tightly in plastic wrap or aluminum foil to prevent freezer burn.
Thawing: When ready to bake, thaw the Overnight Sausage Egg Casserole by placing it in the refrigerator overnight before cooking.
Reheating: If you have leftover baked casserole, reheat individual portions in the microwave or place in an oven at 350°F until warmed through, about 15-20 minutes.
Expert Tips for Overnight Sausage Egg Casserole
- Fresh Ingredients: Use the freshest eggs and quality sausage for the best flavor; it will significantly enhance your Overnight Sausage Egg Casserole.
- Proper Soaking: Ensure you soak the bread in the egg mixture for 8-12 hours, as insufficient soaking can lead to dry spots while over-soaking can make the casserole soggy.
- Customize Wisely: Feel free to experiment with ingredients, but keep the balance right; adding too many veggies can increase moisture and alter texture.
- Check for Doneness: Use a toothpick to check the center of the casserole; it should come out clean when fully cooked, indicating the eggs have set properly.
- Let it Rest: Allow the casserole to rest after baking for 5-10 minutes; this makes slicing easier and helps maintain its structure.
Overnight Sausage Egg Casserole Recipe FAQs
How should I choose the sausage for this casserole?
Absolutely! When selecting your sausage, opt for medium pork sausage for a flavorful base. However, if you’re looking for a lighter option, ground turkey or chicken works beautifully as a substitute. It’s always best to go for fresh options; check for a firm texture and avoid any packaging that has dark spots or excessive moisture.
What is the best storage method for leftover casserole?
After enjoying your delicious Overnight Sausage Egg Casserole, store any leftovers in an airtight container in the refrigerator. It should stay fresh for up to 3-4 days. If you want to keep it longer, you can freeze it—just ensure it’s tightly wrapped to prevent freezer burn.
Can I freeze the casserole? If so, how?
Very! To freeze your Overnight Sausage Egg Casserole, prepare it according to the recipe but do not bake it. Instead, wrap the unbaked casserole tightly in plastic wrap and then in aluminum foil. This prevents freezer burn and keeps it fresh for up to 2 months. When you’re ready to enjoy it, simply thaw it overnight in the refrigerator before baking at 350°F for 50 minutes to an hour.
What should I do if my casserole turns out soggy?
If your casserole is soggy, it’s usually a sign that either it was over-soaked or too many wet ingredients were added. Next time, ensure the bread cubes are adequately spread throughout the egg mixture without excessive moisture. For a better texture, replace part of the milk with a lower moisture ingredient or try lightly toasting the bread cubes beforehand to absorb moisture without getting too soft.
Are there any dietary considerations for pets or allergies?
Absolutely! If you’re concerned about allergies, be mindful of the ingredients. This casserole contains eggs, dairy, and bread, which might pose risks for some individuals. If you plan to share with pets, it’s usually best to avoid giving them human food, especially any seasoned or rich dishes. Instead, stick to their specially formulated meals!
Savory Overnight Sausage Egg Casserole for Busy Mornings
Ingredients
Equipment
Method
- Heat a large skillet over medium heat. Add the medium pork sausage and diced onion, cooking for about 5-7 minutes until the sausage is browned and the onion becomes translucent.
- In a large mixing bowl, crack 8 eggs and whisk them until fully blended. Gradually add in 2 cups of whole milk, 2 cups of shredded cheddar cheese, 1 teaspoon of dry mustard, and a pinch of salt and pepper. Mix thoroughly until combined.
- Lightly spray a 9x13-inch baking dish with cooking oil. Pour in about 4 cups of cubed bread, ensuring an even layer. Pour the egg mixture over the bread cubes, ensuring every piece is moistened.
- Cover the baking dish tightly with plastic wrap and refrigerate for at least 8-12 hours.
- Preheat your oven to 350°F (175°C). Remove the plastic wrap and bake uncovered for 50 minutes to 1 hour.
- Allow the casserole to rest for about 5 minutes before slicing and serving.
