Easy Sausage and Egg Casserole is the dish I build when I want a hot breakfast that feeds a crowd without standing at the stove flipping anything. You layer bread, browned sausage, and cheese, pour over a simple egg-and-milk custard, and let the oven do the rest.
Advertisements1
Think of the custard like a liquid that sets into a solid – that transformation is what turns raw eggs and milk into a sliceable, quiche-like bake. Getting the egg-to-milk ratio right is the single biggest factor between a firm casserole and a watery one, so I keep it at roughly 1 cup of milk per 6 large eggs.
This is a classic make-ahead move: assemble it tonight, refrigerate overnight, and bake it in the morning while the coffee brews. The full walkthrough below covers exact temperatures, times, and the doneness cues that tell you it is done.
Why You'll Love This Recipe
About the Ingredients
1 lb (450g) bulk breakfast sausage, mild or hot
Buy loose bulk sausage or slit the casings on links and squeeze out the meat. Ground turkey sausage works as a lighter substitute with almost the same texture.
6 large eggs
Use large eggs for consistent volume; medium eggs will give you a slightly softer set. Bring them to room temperature for 15 minutes so they blend more smoothly.
2 cups (480ml) whole milk
Whole milk gives the creamiest custard. For a richer version, substitute half-and-half; for a lighter one, use 2% milk but expect a slightly less velvety texture.
1 cup (240ml) heavy cream
Heavy cream adds richness and helps the custard set firm. If you do not have it, use an extra cup of whole milk plus 1 tablespoon of melted butter.
8 slices (about 8 oz/225g) day-old white or sourdough bread
Stale bread is the secret – it soaks up custard without turning to mush. Fresh bread works if you toast it first for 3 minutes to dry it out.
2 cups (200g) shredded sharp cheddar cheese
Sharp cheddar cuts through the richness. Buy a block and shred it yourself; pre-shredded cheese is coated in starch and melts less smoothly.
1 small (150g) yellow onion, diced
A sweet yellow onion balances the salty sausage. Shallots or a leek (white part only) are excellent substitutes.
1 medium (150g) red bell pepper, diced
Red pepper adds sweetness and color. Frozen diced peppers work fine – no need to thaw before adding.
1 teaspoon (3g) garlic powder
Garlic powder distributes evenly through the custard. Granulated garlic is a fine swap; avoid garlic salt, which will make the dish too salty.
1 teaspoon (2g) dried mustard powder
Mustard powder sharpens the cheese flavor without tasting like mustard. You can substitute 1 teaspoon of Dijon mustard whisked into the eggs.
1/2 teaspoon (3g) fine salt
Salt the custard, not the sausage, so you control the total sodium. Kosher salt works too – use a slightly heaped half teaspoon.
1/2 teaspoon (1g) freshly ground black pepper
Fresh-cracked pepper tastes brighter than pre-ground. Add a pinch of cayenne if you like a gentle background heat.
Tips & Tricks
Do not overmix the custard
Whisk the eggs and milk just until combined – about 30 seconds. Over-whisking whips in air that puffs and then deflates, leaving a spongy texture.
Dry out your bread first
Stale or lightly toasted bread absorbs custard instead of dissolving. If your bread is fresh, toast it at 300F (150C) for 3 to 5 minutes before layering.
Let it rest before baking
Even 15 minutes of resting lets the bread soak up liquid so the layers hold together. Overnight in the fridge is even better and improves the final texture.
Check the center, not the edges
The middle is always the last part to set. A knife inserted one inch from the center should come out clean before you pull the pan.
Pro Tips
Step-by-Step Instructions
1. Heat Oven and Prep Pan
Preheat the oven to 350F (175C). Grease a 9×13-inch baking dish with butter or nonstick spray so nothing sticks during the long bake.
2. Brown the Sausage
Cook the sausage in a large skillet over medium-high heat for 6 to 8 minutes, breaking it apart with a spoon, until it is crumbly and no pink remains. It should look deeply browned and register 160F (71C) internally.
3. Soften the Vegetables
Add the onion and bell pepper to the same skillet and cook for 4 to 5 minutes until the onion turns translucent and the pepper softens slightly. Drain off excess fat and let the mixture cool for 5 minutes.
4. Layer the Base
Arrange the bread in a single layer in the prepared dish, tearing slices to fill gaps. Scatter half the cheese over the bread, then spoon the sausage and vegetable mixture evenly on top.
5. Whisk the Custard
In a large bowl, whisk the eggs, milk, cream, garlic powder, mustard powder, salt, and pepper for about 30 seconds, just until the yolks and whites are fully combined and the mixture is uniform in color.
6. Assemble and Rest
Pour the custard evenly over the layers, pressing the bread down gently with a spatula so it soaks. Sprinkle the remaining cheese on top and rest for 15 minutes, or cover and refrigerate overnight.
7. Bake Until Set
Bake uncovered at 350F (175C) for 35 to 40 minutes, until the edges are bubbling and the top is golden brown. A knife inserted one inch from the center should come out clean, and the center should read 160F (71C) on a thermometer.
8. Cool and Serve
Let the casserole rest for 10 minutes so the custard finishes setting, then cut into 6 squares and serve warm. This resting step is what gives you clean, sliceable portions.
Delicious Variations
Southwest Version
Swap the cheddar for pepper Jack, add a 4 oz can of drained green chiles, and finish with fresh cilantro and a spoonful of salsa.
Vegetarian Mushroom and Spinach
Replace the sausage with 12 oz of sauteed mushrooms and 5 oz of squeezed-dry thawed spinach, and use smoked gouda for a meaty depth.
Maple-Bacon Swap
Use 1 lb of cooked crumbled bacon instead of sausage and add 2 tablespoons of maple syrup to the custard for a sweet-savory brunch bake.
How to Store Easy Sausage and Egg Casserole
Refrigerator
Store cooled leftovers in an airtight container in the refrigerator for up to 4 days. Keep it covered so the top does not dry out.
Freezer
Wrap individual cooled squares tightly in plastic wrap, then foil, and freeze for up to 2 months. Thaw overnight in the refrigerator before reheating.
Reheating
Reheat single portions in the microwave for 60 to 90 seconds on medium power, or cover the whole dish with foil and warm at 325F (165C) for 20 minutes until it reaches 165F (74C).
Frequently Asked Questions
Q: Can I make sausage and egg casserole the night before?
Yes, you can assemble the entire casserole up to 24 hours ahead and refrigerate it covered. The bread soaks up the custard overnight, which actually improves the texture. Add 5 to 10 extra minutes to the bake time since it starts cold.
Q: How do I know when the egg casserole is fully cooked?
The casserole is done when the center reaches 160F (71C) and a knife inserted one inch from the middle comes out clean. The edges will be bubbling and the top golden brown. If the center still jiggles like liquid, give it another 5 minutes.
Q: Can I use frozen hash browns instead of bread?
Yes, substitute 4 cups of thawed, squeezed-dry shredded hash browns for the bread. Press them into the pan as the base layer, and expect the casserole to bake 5 to 10 minutes longer because the potatoes release moisture.
Q: Why is my egg casserole watery?
Watery casseroles usually come from undercooked eggs, wet vegetables, or too much milk. Drain the cooked sausage and vegetables well, squeeze any thawed spinach dry, and stick to the 1 cup of milk per 6 eggs ratio listed here.
Q: Can I halve this recipe for a smaller pan?
Yes, cut every ingredient in half and bake in an 8×8-inch dish. Start checking for doneness at 28 minutes, since a smaller pan sets faster. The internal temperature target stays the same at 160F (71C).
Assemble it tonight, bake it tomorrow, and you have a brunch centerpiece that looks like you worked much harder than you did. If you make it, tell me in the comments whether you went classic or Southwest – and snap a photo of that golden top. Stay safe, stay informed.
Easy Sausage and Egg Casserole
Easy Sausage and Egg Casserole bakes in one dish with savory sausage, fluffy eggs, and melted cheddar for a stress-free make-ahead brunch.
🧂 Ingredients
- 1 lb (450g) bulk breakfast sausage, mild or hot
- 6 large eggs
- 2 cups (480ml) whole milk
- 1 cup (240ml) heavy cream
- 8 slices (about 8 oz/225g) day-old white or sourdough bread
- 2 cups (200g) shredded sharp cheddar cheese
- 1 small (150g) yellow onion, diced
- 1 medium (150g) red bell pepper, diced
- 1 teaspoon (3g) garlic powder
- 1 teaspoon (2g) dried mustard powder
- 1/2 teaspoon (3g) fine salt
- 1/2 teaspoon (1g) freshly ground black pepper
📋 Instructions
- 1Heat Oven and Prep Pan — Preheat the oven to 350F (175C). Grease a 9×13-inch baking dish with butter or nonstick spray so nothing sticks during the long bake.
- 2Brown the Sausage — Cook the sausage in a large skillet over medium-high heat for 6 to 8 minutes, breaking it apart with a spoon, until it is crumbly and no pink remains. It should look deeply browned and register 160F (71C) internally.
- 3Soften the Vegetables — Add the onion and bell pepper to the same skillet and cook for 4 to 5 minutes until the onion turns translucent and the pepper softens slightly. Drain off excess fat and let the mixture cool for 5 minutes.
- 4Layer the Base — Arrange the bread in a single layer in the prepared dish, tearing slices to fill gaps. Scatter half the cheese over the bread, then spoon the sausage and vegetable mixture evenly on top.
- 5Whisk the Custard — In a large bowl, whisk the eggs, milk, cream, garlic powder, mustard powder, salt, and pepper for about 30 seconds, just until the yolks and whites are fully combined and the mixture is uniform in color.
- 6Assemble and Rest — Pour the custard evenly over the layers, pressing the bread down gently with a spatula so it soaks. Sprinkle the remaining cheese on top and rest for 15 minutes, or cover and refrigerate overnight.
- 7Bake Until Set — Bake uncovered at 350F (175C) for 35 to 40 minutes, until the edges are bubbling and the top is golden brown. A knife inserted one inch from the center should come out clean, and the center should read 160F (71C) on a thermometer.
- 8Cool and Serve — Let the casserole rest for 10 minutes so the custard finishes setting, then cut into 6 squares and serve warm. This resting step is what gives you clean, sliceable portions.
Jonas writes about technology and digital privacy, translating complex concepts into clear, actionable advice for everyday users. He focuses on practical steps to protect personal data without being paranoid.
