Craving a hearty and easy-to-make breakfast? This Overnight Bisquick Breakfast Casserole is the perfect solution for busy mornings or weekend gatherings.
With layers of savory sausage, crispy bacon, and melty cheese, all held together by a creamy egg mixture, this casserole is a crowd-pleaser.
The best part? You can prepare it the night before, allowing the flavors to meld and making the morning of your gathering a breeze. It’s time to simplify breakfast without compromising on flavor.
Ingredients List
Casserole Ingredients
- 1 lb. ground pork sausage (I prefer Country Mild, but hot sausage works great if you like a bit of spice)
- ½ lb. bacon
- ½ cup finely-diced green bell pepper
- ½ cup finely-diced onion
- 2 cups grated sharp cheddar cheese
- 6 large eggs
- 3 cups whole milk (or substitute with heavy cream for a richer casserole)
- 1 cup Bisquick (or any all-purpose baking mix)
- ½ cup salted butter, melted
- Optional garnish: sliced green onions or fresh herbs such as parsley or chives
Required Kitchen Tools
To make this casserole as easy as possible, here are the essential tools you’ll need:
- 9 x 13-Inch Baking Dish: A large, deep baking dish is essential for holding all the ingredients and ensuring an even bake.
- Large Skillet: For browning the sausage and crisping the bacon, a sturdy skillet will make the process faster and more efficient.
- Whisk or Mixing Bowl: To combine the eggs, milk, Bisquick, and melted butter.
- Sharp Knife & Cutting Board: To chop the vegetables and bacon.
- Measuring Cups & Spoons: Accurate measurements are important to get the perfect balance of flavors.
Having these tools on hand will help you prepare this Overnight Bisquick Breakfast Casserole in no time!
Casserole Preparation
Making this Overnight Bisquick Breakfast Casserole is incredibly easy, especially with the option to prepare it ahead of time. Let’s dive into the simple steps to create a breakfast casserole that will have everyone coming back for seconds!
Step 1: Prepare the Sausage and Bacon
Start by heating a large skillet over medium-high heat. Once hot, add the ground pork sausage and cook it until it’s no longer pink. Be sure to break the sausage apart as it cooks for an even texture. Once cooked, drain off any excess grease, and transfer the sausage to your prepared 9 x 13-inch baking dish.
Next, in the same skillet, add your bacon and fry it until it’s crispy. Once done, remove the bacon from the skillet and place it on a paper towel-lined plate to drain. Once it’s cool enough to handle, crumble or chop the bacon into small pieces. Add both the bacon and sausage to the baking dish, along with finely diced bell pepper, onion, and grated cheddar cheese. Stir everything together for a well-mixed base layer.
Step 2: Mix the Egg Base
In a large bowl, whisk together the eggs, milk (or heavy cream), Bisquick, and melted butter. The Bisquick will help bind the ingredients together, giving the casserole a light, fluffy texture. Make sure to whisk thoroughly until the mixture is smooth and no lumps remain.
Once mixed, pour this egg mixture evenly over the sausage, bacon, vegetables, and cheese in the baking dish. Use a spatula to ensure the mixture is spread out evenly, covering all the ingredients.
Step 3: Refrigerate Overnight
At this point, you can cover the casserole with plastic wrap or aluminum foil and refrigerate it overnight. Allowing the casserole to sit overnight helps the Bisquick to soak into the other ingredients, resulting in a richer and more flavorful dish. If you’re in a rush, you can bake it immediately, but the overnight resting period truly makes a difference!
Baking the Casserole
Now that your casserole has had the chance to soak overnight, it’s time to bake it to golden, cheesy perfection. Here’s how to do it:
Step 1: Bring to Room Temperature
Before baking, remove the casserole from the refrigerator and let it sit on the counter for 30-60 minutes. Allowing it to come to room temperature helps the casserole bake more evenly and prevents it from being too cold when you pop it in the oven. This step ensures the egg mixture sets properly without overcooking the edges.
Step 2: Preheat the Oven
While the casserole is warming up, preheat your oven to 350°F (175°C). This temperature will help cook the casserole evenly while giving the top a nice, golden-brown color.
Step 3: Bake
Once the oven is preheated, place your casserole in the center of the oven and bake it uncovered for 50-60 minutes. You’ll know it’s ready when the top is golden brown, and the center is firm with no liquid. If you’re unsure, you can insert a knife or toothpick in the center – if it comes out clean, it’s done!
Serving and Garnishing
Once the casserole is baked to perfection, it’s time to let it rest for at least 10 minutes before slicing. This resting period allows the casserole to set further, making it easier to cut and serve.
Suggested Garnishes
While this casserole is delicious on its own, a few simple garnishes can elevate the dish and add a fresh touch. Here are some ideas to consider:
- Sliced Green Onions: A sprinkle of fresh green onions not only adds a pop of color but also provides a mild, fresh flavor that complements the savory ingredients.
- Chopped Fresh Herbs: Fresh parsley or chives bring a burst of color and a fragrant, herbaceous finish to each serving. It’s a great way to add a touch of freshness and sophistication.
- Sour Cream or Hot Sauce: If you’re in the mood for something a little extra, serve this casserole with a side of sour cream or a drizzle of your favorite hot sauce for some added creaminess or heat.
Storage Instructions
How to Keep Leftovers Fresh
If you have leftovers (though this casserole is often devoured quickly!), you can store them in an airtight container in the refrigerator for up to 3 days. Reheat individual portions in the microwave or oven for a quick and easy breakfast or brunch option the next day.
Freezing the Casserole
This Overnight Bisquick Breakfast Casserole also freezes beautifully. To freeze, simply allow it to cool completely, then cover tightly with plastic wrap or aluminum foil. Place the casserole in a freezer-safe container or bag, and freeze for up to 1 month. When you’re ready to enjoy it again, thaw overnight in the refrigerator and reheat in the oven at 350°F for 20-30 minutes, or until heated through.
Overnight Bisquick Breakfast Casserole
Equipment
- 9 x 13-inch Baking Dish
- Large Skillet
- Whisk or Mixing Bowl
- Sharp Knife & Cutting Board
- Measuring Cups & Spoons
Ingredients
- 1 lb . ground pork sausage (I prefer Country Mild, but hot sausage works great if you like a bit of spice)
- ½ lb . bacon
- ½ cup finely-diced green bell pepper
- ½ cup finely-diced onion
- 2 cups grated sharp cheddar cheese
- 6 large eggs
- 3 cups whole milk (or substitute with heavy cream for a richer casserole)
- 1 cup Bisquick (or any all-purpose baking mix)
- ½ cup salted butter, melted
- Optional garnish: sliced green onions or fresh herbs such as parsley or chives
Instructions
- Start by heating a large skillet over medium-high heat. Once hot, add the ground pork sausage and cook it until it's no longer pink. Be sure to break the sausage apart as it cooks for an even texture. Once cooked, drain off any excess grease, and transfer the sausage to your prepared 9 x 13-inch baking dish.
- Next, in the same skillet, add your bacon and fry it until it's crispy. Once done, remove the bacon from the skillet and place it on a paper towel-lined plate to drain. Once it's cool enough to handle, crumble or chop the bacon into small pieces. Add both the bacon and sausage to the baking dish, along with finely diced bell pepper, onion, and grated cheddar cheese. Stir everything together for a well-mixed base layer.
- In a large bowl, whisk together the eggs, milk (or heavy cream), Bisquick, and melted butter. The Bisquick will help bind the ingredients together, giving the casserole a light, fluffy texture. Make sure to whisk thoroughly until the mixture is smooth and no lumps remain.
- Once mixed, pour this egg mixture evenly over the sausage, bacon, vegetables, and cheese in the baking dish. Use a spatula to ensure the mixture is spread out evenly, covering all the ingredients.
- At this point, you can cover the casserole with plastic wrap or aluminum foil and refrigerate it overnight. Allowing the casserole to sit overnight helps the Bisquick to soak into the other ingredients, resulting in a richer and more flavorful dish. If you’re in a rush, you can bake it immediately, but the overnight resting period truly makes a difference!
- Before baking, remove the casserole from the refrigerator and let it sit on the counter for 30-60 minutes. Allowing it to come to room temperature helps the casserole bake more evenly and prevents it from being too cold when you pop it in the oven. This step ensures the egg mixture sets properly without overcooking the edges.
- While the casserole is warming up, preheat your oven to 350°F (175°C). This temperature will help cook the casserole evenly while giving the top a nice, golden-brown color.
Conclusion
This Overnight Bisquick Breakfast Casserole is the ultimate breakfast dish—easy to prepare, comforting, and filled with rich flavors. Whether you’re preparing it for a holiday brunch or a busy weekday morning, it’s sure to be a hit. With its simple ingredients and minimal prep time, this casserole is as versatile as it is delicious. Plus, the ability to make it the night before means you can enjoy a warm, satisfying meal with minimal morning effort. So, give it a try, and let this casserole become your new go-to breakfast favorite!
