Easy Bisquick Breakfast Casserole with Sausage

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This Easy Bisquick Breakfast Casserole with Sausage is always a crowd-pleaser and SO easy to make! Sausage, eggs, cheese and Bisquick baking mix are combined to make this super simple casserole that’s perfect for breakfast or brunch. It can be easily be made ahead the day before, too for a stress-free morning!

Bisquick Breakfast Casserole with Sausage in a white baking dish.

When you have overnight guests, feeding a crowd, or just need an EASY breakfast recipe that everyone loves, this easy breakfast casserole recipe is the answer! Made with eggs, sausage, Bisquick and of course, plenty of cheese, this casserole will be a crowd-pleaser!

This dish is fantastic for a holiday brunch or Christmas morning breakfast! I even like to make this dish as a meal prep and keep it in the fridge for an easy breakfast each morning! It’s just so versatile! 🙂

Need more yummy breakfast recipes?! Try these amazing Hawaiian Roll Breakfast Sliders! Want something sweet? This Granny Cake and this EASY Bisquick Coffee Cake are both amazing for breakfast!!!

What you’ll love about this recipe:

  • QUICK AND EASY TO PREP –only takes about 10 minutes!
  • Can EASILY BE MADE AHEAD the day before for a stress-free morning!
  • So many DELICIOUS WAYS TO CUSTOMIZE this casserole!
  • LEFTOVERS ARE GREAT the next day and this casserole FREEZES WELL, too!


You’ll need the following ingredients to make this delicious Bisquick Breakfast Casserole Recipe:

Ingredients needed to make Bisquick Breakfast Casserole.


Breakfast Sausage: Bulk breakfast sausage (without casings) is best for this recipe. Jennie-O sells a bulk turkey breakfast sausage that I love!

Milk: I have made this recipe with low fat milk, whole milk and half and half. They all work. Whole milk is my top choice, though 🙂 Avoid fat free/skim milk.


Here are some quick visual instructions. Remember that full instructions with exact ingredients will be in the recipe card below!

Step 1: Cook breakfast sausage in a large skillet. Add onions and red bell pepper and/or green pepper. Add to casserole dish.

Sausage, peppers and onions cooked, in a white baking dish.

Step 2: In a large bowl, whisk together eggs, Bisquick, cheese, milk, mustard, maple syrup, salt and pepper.

Egg and Bisquick mixture being whisked together in a large glass measuring cup.

Step 3: Pour egg mixture into the casserole dish over the sausage, onions and peppers.

Egg mixture poured over the sausage and veggies in a white baking dish.

Step 4: Heat oven to 375°F and bake the sausage egg casserole for 35-40 minutes until golden brown around the edges and eggs are cooked in the middle.

Easy Bisquick Breakfast Casserole right after it's been baked in the oven.


  • Freshly grated cheese: Cheese that is freshly grated (vs. pre packaged) ALWAYS tastes better and melts better than pre packaged cheese. If you have 5 extra minutes, grate up your own from the block!

  • Cover with foil: If you see the edges getting a bit too brown before the center of the casserole is cooked through, loosely cover the baking dish with aluminum foil.

  • Add cheese at end: Reserve a bit of cheese and add it during the last few minutes of cooking for a nice, cheesy topping!

Confidence Tip

No need for fancy tools to get your sausage broken up up nice and fine! Use a potato masher during the last minute of cooking to break up the meat–it works like a charm!


  • Storage: Leftovers can be stored in the fridge right in the baking dish, covered tightly with foil for up to 3 days. You can also transfer individual servings to an airtight container or Ziploc bag and store them in the fridge for 3-4 days. These are my FAVORITE storage containers!

  • Reheating: Reheat individual portions in the microwave for 30-60 seconds.

  • Freezing: This breakfast casserole freezes up great after it’s been cooked. For best results, use a disposable, freezer-safe baking dish like these. Cover tightly with several layers of foil and freeze up to 2 months. When you are ready to enjoy, thaw the casserole overnight in the fridge, then bake at 375°F. Note that you will need to add a little more baking time when it’s being baked straight from the fridge.

Additions and Substitutions


  • Meat Lovers: Add another pound of sausage or chopped, cooked bacon!
  • Veggie: Skip the meat all together and add more peppers and onions! Mushrooms are a great addition, too.
  • Hash Browns: I personally feel this casserole is carb-y enough already with the Bisquick, but I won’t lie, it’s also delicious with potatoes!! Add 2 cups of FROZEN shredded hash browns to the egg mixture.
  • Spice it Up! Hot sauce, chopped jalapeno or diced green chilies are great ways to add some heat to this Bisquick breakfast casserole!


  • Pork Sausage: Although pork sausage is the most common breakfast sausage, Jennie-O also makes a really yummy turkey breakfast sausage if you want to lighten it up.
  • Milk: Low fat, whole milk, half and half and even heavy cream work just fine in this recipe. Avoid using skim milk as it’s a bit too watery.


How do I know when the breakfast casserole is done?

This egg casserole is done when the edges begin to turn golden brown and separate from the sides. The middle should be almost all the way set….a SLIGHT “jiggle” is OK. It will continue to set up when you take it out of the oven and let it rest.

What do you serve with this Bisquick Breakfast Casserole?

One of my favorite things about this recipe is that it has protein, veggies and carbs all in one dish! A little fresh fruit or a fruit salad and some orange juice are all you need to make it a complete meal!

For a fun brunch idea, add some delicious Bloody Marys to complement this delicious casserole!

Can I make this breakfast casserole ahead of time?

Absolutely. Assemble the casserole the night before. Cover the baking dish with foil and store in the fridge. When you bake it the next morning, just keep in mind you will need to add a little baking time since it’s chilled and coming right from the oven.

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A close up of a piece of Bisquick Breakfast Casserole on a spatula.


Check out all of my kitchen essentials in my Amazon store!

Potato Masher: Gets your sausage broken up nice and fine! One of my favorite kitchen hacks! 🙂

White Baking Dishes: Can’t go wrong with basic white baking dishes.

8 Cup Measuring Cup: I love this big measuring cup to mix the egg/Bisquick mixture.


I hope you love this Bisquick Breakfast Casserole with Sausage! If you make it be sure to leave a comment and a rating so I know how you liked it. Enjoy, xo!

Bisquick Breakfast Casserole with Sausage

Casey Rooney
This Easy Bisquick Breakfast Casserole with Sausage is always a crowd-pleaser and SO easy to make! Sausage, eggs, cheese and Bisquick baking mix are combined to make this super simple casserole that's perfect for breakfast or brunch. It can be easily be made ahead the day before, too for a stress-free morning!
4.93 from 27 votes
Prep Time 10 minutes
Cook Time 35 minutes
Resting Time 10 minutes
Total Time 55 minutes
Course Breakfast, brunch
Cuisine American
Servings 8
Calories 435 kcal


  • 1 lb. breakfast sausage Bulk, without casings. Both pork sausage or turkey sausage work great.
  • 1 cup onion, chopped
  • 1 bell pepper, chopped any color, or use a combo!
  • 6 large eggs
  • 1 cup Bisquick All-Purpose Baking Mix
  • 2 cups cheese, grated sharp cheddar cheese, Monterey Jack, mozzarella cheese…choose you favorites!
  • 2 cups milk whole milk works best, but low-fat milk or half and half are also OK
  • 3 tsp mustard
  • 2 tbsp maple syrup
  • 1/2 tsp kosher salt See Note 1
  • black pepper to taste


  • Preheat oven to 375°F and spray a 9×11 baking dish (or similar) with cooking spray.
  • In a large skillet, cook sausage, breaking it up with a wooden spoon as it cooks. Pro Tip: Use a potato masher during the last minute of cooking to get the meat broken up nice and fine. When sausage is cooked, drain the grease. Then, add onion and bell pepper to the skillet with the cooked sausage. Cook 1 minute more. Transfer mixture to the baking dish.
  • In a large mixing bowl, whisk eggs, Bisquick, milk, mustard, maple syrup, salt, pepper and 1 1/2 cups of the cheese (reserve the rest of the cheese for the top, at the end of cooking). Whisk until all ingredients are well-combined.
  • Pour Bisquick mixture into the baking dish over the sausage and veggies. Bake, uncovered for 35-40 minutes until the edges are golden brown and the center is nearly set. The center might be A LITTLE jiggly, but it will continue to set when it comes out of the oven. A few minutes before you are ready to take it out of the oven, sprinkle on the remaining cheese.
  • Take the casserole out of the oven and let it rest for 10-15 minutes before cutting it into squares. Optional: sprinkle with green onions or parsley for a little freshness!


Note 1: This may not seem like a lot of salt, but the Bisquick mix already has a good amount of salt in it already…so we don’t want to overdo it! 
Nutrition information is only an estimate. Info is based on the Very Well Fit Nutrition Calculator.
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Calories: 435kcalCarbohydrates: 13gProtein: 26gFat: 31gSaturated Fat: 13gCholesterol: 220mgSodium: 889mgPotassium: 408mgFiber: 1gSugar: 8gVitamin D: 48µgCalcium: 323mgIron: 2mg
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4.93 from 27 votes (15 ratings without comment)

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Recipe Rating


  1. 5 stars
    I love this!! And will be making of course I have to cut it down lots since its just me. But I think enough for 3 meals would be enough. This is so easy and looks so good.

  2. 5 stars
    Delicious! I love the use of Bisquick instead of potatoes to the mix. Great easy flavors that everyone loves for our weekend brunch!

  3. 5 stars
    I was searching for breakfast casseroles because my parents are coming to town next weekend and I wanted something easy, but also delicious and I finally found it! This is perfect.

  4. 5 stars
    I’m always looking for new breakfast recipes, and this casserole is perfect! I can’t wait to make it this weekend!

  5. 5 stars
    Sweet and savory and cozy, everything a good hearty breakfast should be! What a great way to start the day. This was a hit with the family!

  6. 5 stars
    I needed something easy to make when my in laws were in town and this worked great! So easy but tasty!

  7. 5 stars
    This was such a delicious quick and easy breakfast. I made it when we had friends over for brunch and they loved it.