If you’re looking for a simple yet delicious way to kickstart your morning, look no further than this Easy Breakfast Casserole. With its comforting layers of sausage, fluffy eggs, and gooey cheddar cheese, this dish will have your family begging for seconds. Not only is it a breeze to whip up, but it’s also perfect for feeding a crowd or meal prepping for the week ahead. Let’s dive into what makes this breakfast casserole a must-try!
Why This Recipe is a Keeper

This Easy Breakfast Casserole is a keeper for many reasons. First and foremost, it’s incredibly versatile. You can customize it with your favorite ingredients—think veggies, different types of cheese, or even leftovers from last night’s dinner. Additionally, it’s a one-pan wonder, meaning minimal cleanup—always a win in the kitchen! Whether you’re hosting a brunch, feeding a large family, or simply looking for a hearty breakfast to fuel your day, this casserole fits the bill perfectly.
Ingredient Rundown
To create this delightful breakfast casserole, you’ll need the following ingredients:
- 1 lb sausage – Use your favorite type of sausage, whether it’s spicy, mild, or turkey. This adds rich flavor and protein.
- 2 cups shredded cheddar cheese – The star of the dish! Cheddar cheese melts beautifully and gives a creamy texture.
- 6 large eggs – Eggs provide structure and fluffiness to the casserole.
- 1 cup biscuit mix – This is the secret ingredient that makes the casserole rise and adds a lovely biscuit-like texture.
- 2 cups milk – I recommend using whole milk for its richness, but you can substitute with any milk you prefer.
- Salt and pepper to taste – Essential for enhancing all the flavors in the dish.
What’s in the Gear List
Before we get cooking, make sure you have the right tools on hand:
- Large mixing bowl – For combining all the ingredients easily.
- Whisk – To beat the eggs and mix everything together smoothly.
- 9×13 inch baking dish – This is the perfect size for baking your casserole.
- Skillet – For browning the sausage before adding it to the casserole.
- Measuring cups and spoons – Accurate measurements are key to a successful recipe.
From Start to Finish: Easy Breakfast Casserole

Now that you have everything ready, let’s get cooking! Follow these simple steps for a perfect Easy Breakfast Casserole.
Step 1: Preheat Your Oven
Start by preheating your oven to 350°F (175°C). This ensures your casserole cooks evenly and gets that lovely golden top.
Step 2: Cook the Sausage
In a skillet over medium heat, add your sausage. Cook it until browned and cooked through, breaking it apart with a spatula as it cooks. This should take about 5-7 minutes. Once done, drain any excess grease and set aside.
Step 3: Mix the Wet Ingredients
In a large mixing bowl, whisk together the eggs and milk until well combined. Add salt and pepper to taste.
Step 4: Combine the Ingredients
To the egg mixture, stir in the cooked sausage, biscuit mix, and 1½ cups of shredded cheddar cheese. Mix until everything is combined and the biscuit mix is evenly distributed.
Step 5: Pour Into Baking Dish
Grease your 9×13 inch baking dish with a little oil or cooking spray. Pour the casserole mixture into the dish, spreading it out evenly.
Step 6: Top with Cheese
Sprinkle the remaining ½ cup of cheddar cheese on top of the casserole. This will create a beautifully cheesy crust as it bakes.
Step 7: Bake
Place the casserole in the preheated oven and bake for 30-35 minutes, or until the center is set and the top is golden brown. A toothpick inserted in the center should come out clean.
Step 8: Cool and Serve
Remove the casserole from the oven and let it cool for about 5-10 minutes before slicing and serving. This will help it hold its shape when you cut into it.
Adaptations for Special Diets

If you’re looking to adapt this Easy Breakfast Casserole for specific dietary needs, here are some suggestions:
- For a vegetarian version, substitute the sausage with sautéed vegetables like bell peppers, onions, and spinach.
- To make it gluten-free, use a gluten-free biscuit mix and ensure your sausage is gluten-free as well.
- For a lighter option, use turkey sausage and substitute half of the cheese with a lower-fat variety.
- For a dairy-free version, use almond milk and dairy-free cheese alternatives.
Mistakes Even Pros Make
Cooking is a journey, and even seasoned chefs can make mistakes. Here are a few common pitfalls to avoid with your Easy Breakfast Casserole:
- Not browning the sausage properly can result in a bland flavor. Make sure it’s well-cooked and seasoned before mixing it in.
- Overmixing the batter can lead to a dense casserole. Stir just until combined for a light and fluffy texture.
- Not letting the casserole cool before slicing can make it fall apart. Patience is key!
- Using low-quality cheese can impact the flavor. Opt for a good-quality cheddar for the best results.
Cooling, Storing & Rewarming
Once you’ve enjoyed your Easy Breakfast Casserole, you may have leftovers to deal with. Here’s how to cool, store, and reheat your casserole properly:
Allow the casserole to cool completely before storing it. Transfer any leftovers to an airtight container and refrigerate for up to 3-4 days. If you want to keep it longer, you can freeze it for up to 2 months. To reheat, simply bake it in the oven at 350°F (175°C) until warmed through, about 20-25 minutes. You can also microwave individual portions for a quick meal.
Common Questions
Can I make this casserole ahead of time?
Absolutely! You can prepare the casserole the night before and store it in the refrigerator. Just pop it in the oven the next morning for a quick and easy breakfast.
Can I use different types of cheese?
Yes! Feel free to experiment with different cheeses like mozzarella, pepper jack, or even feta for a unique twist.
How do I know when the casserole is done?
The casserole is done when it’s puffed up, golden on top, and a toothpick inserted in the center comes out clean.
Can I add vegetables to this casserole?
Definitely! You can add sautéed vegetables like spinach, mushrooms, or tomatoes for added nutrition and flavor.
If you enjoyed this Easy Breakfast Casserole, you might also like:
Ready to Cook?
With its hearty ingredients and straightforward preparation, this Easy Breakfast Casserole is sure to become a staple in your breakfast repertoire. Whether you’re cooking for a crowd or just for yourself, you’ll love how easy and satisfying this dish is. So gather your ingredients, preheat that oven, and get ready to enjoy a delicious start to your day!

Easy Breakfast Casserole
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C).
- In a skillet over medium heat, cook the sausage until browned and cooked through, about 5-7 minutes. Drain excess grease.
- In a large mixing bowl, whisk together the eggs and milk. Add salt and pepper to taste.
- Stir in the cooked sausage, biscuit mix, and 1½ cups of shredded cheddar cheese until combined.
- Grease the 9x13 inch baking dish and pour the mixture into it, spreading evenly.
- Top with the remaining ½ cup of cheddar cheese.
- Bake for 30-35 minutes until the center is set and the top is golden brown.
- Let it cool for 5-10 minutes before slicing and serving.
Notes
- Customize with your favorite veggies for added nutrition.
- Use gluten-free biscuit mix for a gluten-free option.
- Make ahead and refrigerate overnight for an easy breakfast.
