This Sausage and Egg Casserole is the kind of breakfast that makes everyone shuffle into the kitchen in their pajamas, drawn in by that golden, cheesy smell coming from the oven. Crispy edges, fluffy egg-soaked bread, melty Cheddar, and hearty sausage all baked together into one bubbling dish. It's cozy in the best possible way.
I started making this the night before holiday mornings when I needed something I could just slide into the oven without thinking. Simple ingredients, almost zero morning effort, and it feeds a crowd without any stress. If you love easy savory breakfasts, you might also enjoy Turkey Sausage, Cottage Cheese Egg Bake, or Vegan Sourdough Discard Breakfast for more make-ahead ideas. For something fun on the side, German Potato Pancakes and Cowboy Breakfast Sliders Recipe are always a hit with the family too.
Why You'll Love This Sausage and Egg Casserole
This cheesy egg casserole earns a permanent spot in the breakfast rotation for good reason.
- Totally make-ahead. You build the whole thing the night before, so morning is just preheating the oven.
- Feeds a crowd. Eight generous servings from one dish makes it perfect for family brunch.
- Simple ingredients. Eggs, bread, sausage, cheese, and a few pantry staples are all you need.
- Customizable. Swap the bread, change the cheese, or toss in veggies. This overnight egg bake is very forgiving.
- Beginner-friendly. No complicated techniques. If you can brown sausage and whisk eggs, you've got this.
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Ingredients for Sausage and Egg Casserole
Here's everything you need for this savory morning casserole, plus a little note on why each one matters.
Bulk pork sausage (1 pound): This is the heart of the dish. It brings rich, savory flavor and a satisfying chew to every bite of the sausage and egg casserole. Go with your favorite brand or seasoning level.
Large eggs (8): Eggs are the base of this egg and sausage bake. They set up beautifully in the oven and give the casserole that custardy, fluffy texture everyone loves.
Milk (2½ cups): Milk loosens the egg mixture and helps everything bake up soft and tender rather than dense. Whole milk gives the richest result.
Salt (1 teaspoon): Brings all the flavors into focus. Don't skip it.
Ground mustard (1 teaspoon): This is the quiet secret ingredient. You won't taste mustard exactly, but it adds a subtle depth that makes the whole dish taste more interesting.
White bread, cut into ½-inch cubes (6 slices): The bread soaks up the egg mixture overnight and turns into something almost like a savory bread pudding. Day-old bread works especially well here.
Shredded Cheddar cheese (1 cup): Sharp Cheddar melts into gooey, golden pockets throughout the casserole. It also forms that irresistible crispy cheese crust on top.
Cooking spray: Keeps everything from sticking to the baking dish so cleanup stays easy.
See recipe card for quantities.
How to Make Sausage and Egg Casserole
Follow these steps for a perfect breakfast casserole with bread every single time.
Cook sausage: Heat a large skillet over medium-high heat. Add the bulk pork sausage and cook, stirring and breaking it up, until it's crumbly, fully browned, and no longer pink, about 10 minutes. Drain off and discard the excess grease. You want the sausage dry enough that it doesn't make the egg mixture greasy.
Prepare egg mixture: In a large mixing bowl, beat the 8 eggs well, then stir in the milk, salt, and ground mustard until everything is smoothly combined. The mixture should look uniform with no streaks of yolk.
Combine ingredients: Fold in the bread cubes, shredded Cheddar cheese, and cooked sausage. Stir gently so the bread doesn't break down too much. You want some good-sized chunks in the finished sausage and egg casserole.
Assemble casserole: Lightly spray a 7x11-inch baking dish with cooking spray. Pour the mixture in and spread it out evenly. Cover tightly with plastic wrap or foil and refrigerate for at least 8 hours or overnight. This resting time lets the bread fully absorb the egg mixture, which is what gives the overnight breakfast recipe its soft, custardy texture.
Preheat oven: Pull the casserole out of the refrigerator 30 minutes before baking. This takes the chill off so it bakes evenly. Preheat your oven to 350°F (175°C).
Bake: Bake uncovered until a knife inserted near the center comes out clean, about 40 minutes. The top should be golden and the edges should be set and slightly puffed. Let it cool for a few minutes before slicing and serving.
Substitutions and Variations
This sausage and egg casserole is easy to adapt. Here are a few ideas.
Sausage and egg casserole without bread: Swap the bread cubes for frozen hash browns or diced cooked potatoes. You get that hearty base without any bread at all, and the texture is still wonderful.
Simple sausage egg and cheese casserole: Keep it minimal. Skip the mustard and just use salt, eggs, sausage, and cheese. It's still a deeply satisfying breakfast casserole with bread or without.
Sausage and egg casserole with biscuits: Use chopped-up biscuits instead of white bread. The doughy texture soaks up the egg mixture beautifully and adds a slightly richer flavor.
Breakfast casserole with eggs, sausage, and hash browns: Layer frozen hash browns on the bottom of the dish before adding the egg mixture for a heartier, more filling version.
Sausage egg and cheese casserole with bread variations: Try sourdough, brioche, or Italian bread instead of white for a richer, more complex flavor in every bite of the sausage and egg casserole.
Equipment You'll Need
- Large skillet
- Large mixing bowl
- 7x11-inch baking dish
- Cooking spray
- Knife for bread
- Whisk
Storage Tips
Refrigerator: Leftover sausage and egg casserole keeps well covered in the fridge for up to 3 days. Reheat individual portions in the microwave for about a minute, or warm the whole dish in a 325°F oven covered with foil.
Freezer: You can freeze baked portions wrapped tightly for up to 2 months. Thaw overnight in the fridge before reheating.
Make-ahead note: The casserole needs at least 8 hours in the fridge before baking, so plan accordingly. Overnight is ideal.
Expert Tips for the Best Results
Don't skip the chill time. The overnight rest is what transforms this from a simple egg scramble into a proper sausage and egg casserole with that perfect custardy texture. Eight hours is the minimum.
Drain the sausage well. Extra grease in the egg mixture makes the casserole greasy and heavy. Take a minute to drain it thoroughly.
Use room-temperature eggs and milk if possible. They blend more smoothly and help the casserole bake more evenly.
Cover loosely with foil for the first 20 minutes if your oven runs hot. This prevents the top from browning too fast before the center sets.
Let it rest before slicing. Five minutes of resting after baking helps the easy breakfast bake with sausage hold its shape when you cut and serve it.
FAQ
What are common sausage casserole mistakes?
The biggest ones are not draining the sausage well, skipping the overnight chill, and overbaking. For this sausage and egg casserole, pull it out as soon as the center knife test comes back clean.
Can you put raw sausage in a breakfast casserole?
It's not recommended. Cooking and draining the sausage first ensures it's fully cooked and removes excess grease that would make the sausage and egg casserole greasy and heavy.
Why is it called John Wayne casserole?
John Wayne casserole is a different savory bake made with ground beef, peppers, and biscuits. It's named after the actor because the recipe was supposedly submitted by him. It's a fun piece of food history but unrelated to this egg and sausage bake.
How do you bake an egg and sausage casserole?
After the overnight chill, let it sit out 30 minutes, then bake at 350°F uncovered for about 40 minutes until the center is set. Simple and reliable every time.
Can I make a sausage egg breakfast casserole Pioneer Woman style?
The Pioneer Woman's version often uses crescent rolls or biscuits as the base. You can swap the white bread in this recipe for those to get a similar richer, butterier result in your sausage and egg casserole.
What's the best bread for a sausage and egg casserole with bread?
White sandwich bread is classic and soaks up the egg mixture perfectly. But sourdough, brioche, or even a hearty multigrain all work well and add their own character.
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Savory Sausage & Egg Breakfast Bake
Ingredients
Equipment
Method
- Cook the sausage in a large skillet over medium-high heat until fully browned and crumbly, about 10 minutes.
- Drain any excess grease from the pan.
- In a large bowl, whisk the eggs together, then blend in the milk, salt, and ground mustard until smooth.
- Fold in the cubed bread, shredded Cheddar, and cooked sausage, making sure everything is evenly combined.
- Spray a 7x11-inch baking dish with cooking spray and pour the mixture in. Cover and refrigerate for 8 hours or overnight.
- Remove the dish from the refrigerator 30 minutes before baking. Preheat oven to 350°F (175°C).
- Bake uncovered for 40–50 minutes, or until a knife inserted in the center comes out clean and the top is lightly golden.
- Let cool slightly before serving for easier slicing.
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