This cozy sausage breakfast casserole brings together just four simple ingredients: sausage, eggs, cheese, and bread. It’s hearty, cheesy, and oh-so-easy to make!
I love making this casserole on lazy weekends. It fills the kitchen with yummy smells, and everyone can chow down at once. Plus, who can resist that gooey cheese? 😋
Key Ingredients & Substitutions
Breakfast Sausage: Using bulk breakfast sausage is key for flavor. If you prefer a healthier option, turkey or chicken sausage works well too. You could even use plant-based sausage if you’re looking for vegetarian alternatives.
Eggs: Fresh, large eggs add richness. If you’re looking to reduce cholesterol, consider using egg whites or a mix of whole eggs and egg substitutes.
Cheddar Cheese: I love sharp cheddar for added flavor. If you’re feeling adventurous, try pepper jack for a spicy kick or mozzarella for a milder taste.
Bread: Day-old bread is perfect as it absorbs flavors without getting mushy. French bread or sourdough can elevate the dish. Gluten-free bread can also be used for those with dietary restrictions.
How Do I Ensure My Casserole Sets Perfectly?
Getting the casserole just right can be tricky, but here’s how to do it:
- Make sure your oven is fully preheated before baking the casserole to ensure even cooking.
- Whisk the eggs well so they mix evenly with the other ingredients.
- Don’t skip letting it cool for a few minutes after baking. This helps the casserole firm up and makes slicing easier.
And remember, every oven is a bit different, so keep an eye on your casserole as it bakes!

4 Ingredient Sausage Breakfast Casserole
Ingredients:
- 1 pound breakfast sausage (bulk)
- 6 large eggs
- 2 cups shredded cheddar cheese
- 4 cups cubed bread (day-old white or any bread you prefer)
How Much Time Will You Need?
This delicious casserole takes about 10 minutes to prepare and 40-45 minutes to bake, for a total time of around 55-55 minutes. It’s perfect for a cozy breakfast or brunch!
Instructions:
1. Preheat the Oven:
First, preheat your oven to 350°F (175°C). Greasing a 9×13 inch baking dish helps prevent the casserole from sticking, so don’t skip this step!
2. Cook the Sausage:
In a skillet over medium heat, cook the breakfast sausage until it’s browned and fully cooked. Make sure to break it up into small pieces as it cooks. If there’s extra fat, drain it to keep the casserole from getting greasy.
3. Mix the Ingredients:
In a large mixing bowl, whisk the eggs until well blended. Then, add the cubed bread, the cooked sausage, and 1 1/2 cups of shredded cheddar cheese. Gently stir everything together until well combined.
4. Assemble the Casserole:
Pour the mixture into the greased baking dish, spreading it out evenly. Now, sprinkle the remaining 1/2 cup of cheddar cheese on top to add that lovely cheesy crust!
5. Bake It:
Place the baking dish in the preheated oven and bake for about 40-45 minutes. You’ll know it’s ready when the eggs are fully cooked, the casserole is set, and the top is golden and bubbly.
6. Cool and Serve:
Once done, remove the casserole from the oven and let it cool for a few minutes. This resting time helps make slicing easier. Feel free to garnish with fresh herbs like parsley or chives if you’d like, and then it’s ready to enjoy!
This simple, hearty breakfast casserole is packed with savory sausage and cheesy goodness, making it a hit for any time of day!
Can I Use Frozen Sausage for This Recipe?
Yes, you can use frozen sausage, but make sure it’s completely thawed before cooking! The best way to thaw it is in the refrigerator overnight or in a sealed plastic bag submerged in cold water.
Can I Make This Breakfast Casserole Ahead of Time?
Absolutely! You can prepare the casserole the night before by mixing the ingredients and storing it in the refrigerator. Just bake it in the morning when you’re ready to serve!
How Do I Store Leftovers?
If you have leftovers, store them in an airtight container in the fridge for up to 3 days. You can reheat individual portions in the microwave or warm them up in the oven for a few minutes at 350°F (175°C).
Can I Customize the Ingredients?
Definitely! Feel free to add other ingredients like diced vegetables, cooked bacon, or different types of cheese to tailor the casserole to your taste. Just be mindful that adding too much extra can change the baking time!



