This hot and hearty Sausage Breakfast Casserole is delicious and easy to make and bake or prep ahead of time.
A simple mixture of breakfast sausage, bell pepper, and cheeses mixed with potatoes and mild green chiles. It’s all topped with an egg mixture and baked until browned and bubbly.
Loaded with everyone’s favorites, it makes a great breakfast or dinner and reheats well for quick meals throughout the week.
Easy Breakfast Casserole
- Make and bake right away or…
- make-ahead, cover, and bake the next day! No-fuss, no muss!
- Just like a shredded hashbrown breakfast casserole, versatile so you can add in your favorite veggies or even leftover taco meat!
- Save time and use precooked sausages or pre-cooked bacon. Frozen hashbrowns can be found with onions and bell peppers already mixed in, too!
Ingredients & Variations
Use either bulk sausage or breakfast sausage links (even turkey sausages will work). No sausage? Add cooked bacon pieces or even Italian sausage!
Red bell peppers are colorful and while mild green chiles add flavor, but this casserole is a great vehicle for other vegetables too. Sliced mushrooms, fresh chopped spinach, leftover roasted veggies, or even a bag of frozen peppers and onions can be added to the casserole.
Frozen diced potatoes make this quick and easy. If you’d like to use your own fresh potatoes, peel and dice 1/2-inch. Cook the diced potatoes (either boil, roast, or panfry) until tender. Shredded hashbrowns work too.
Eggs and milk give a light fluffy texture and hold everything together.
Cheddar and pepper jack are bold and delicious. They pair well with the flavors in this recipe but almost any shredded cheese works. While I usually recommend shredding your own cheeses, pre-shredded work well in this recipe (and save time!).
How to Make a Sausage Breakfast Casserole
This easy recipe comes together in no time for the perfect breakfast:
- Cook sausages and onion in a pan per the recipe below.
- Add them to a casserole dish with the remaining ingredients (reserving 1/2 the cheese).
- Whisk eggs & milk and pour over casserole. Bake.
- Top with remaining cheese and bake until cheese melted.
PRO TIP: Serve portions with a dollop of sour cream or salsa, and garnish with sliced black olives and sliced green onions.
Tips for the Best Breakfast Casserole
- Use large eggs and whisk well.
- If adding other vegetables, be sure to pre-cook any that have a lot of water (like mushrooms).
- Remove the casserole from the fridge while the oven preheats.
- After baking, let the casserole rest for about 10-15 minutes before cutting into squares and serving.
Hosting Brunch?
- Chorizo Breakfast Hash – so easy & cheesy
- Sheet Pan Pancakes – perfect for a crowd
- Eggs Benedict Casserole – a fun twist on a classic
- Sausage Cheddar Breakfast Strata – a one-dish wonder
- Hashbrown Breakfast Casserole – a reader fave
- Tater Tot Breakfast Casserole – such a comforting dish!
Did you make this Sausage Breakfast Casserole? Be sure to leave a rating and a comment below!
Sausage Breakfast Casserole
Ingredients
- 1 pound breakfast sausage links or bulk sausage
- 1 large onion diced
- 20 ounces diced hash browns thawed
- 1 red bell pepper diced
- 4 ounces canned mild green chiles drained
- 1 cup shredded pepper jack cheese divided
- 1 cup shredded cheddar cheese divided
Egg Mixture
- 8 eggs
- 1 ⅓ cups milk
- ½ teaspoon cumin
- ½ teaspoon garlic powder
- salt and pepper to taste
Instructions
- Preheat oven to 350°F (if baking immediately). Grease a 9x13 pan or a 3qt casserole dish.
- If using breakfast sausage links, cut the breakfast sausages into 4 pieces about ½-inch long.
- Place sausages in a large skillet and cook over medium-high heat until are browned, about 7-8 minutes. Add onion to the pan and cook until the sausages are cooked through and the onion is softened, about 3 minutes more. Drain any fat and set aside to cool.
- Place the sausage mixture, thawed hash browns, bell pepper, green chiles, and half of each of the cheeses in the prepared pan. Stir to combine.
- Whisk the egg mixture in a large bowl until smooth. Pour over the hashbrowns.
- Cover and refrigerate overnight* if desired or bake immediately.
- Bake covered for 40 minutes. Uncover, top with remaining 1 cup of cheese, and bake an additional 30-35 minutes or until cooked through.
Notes
- If casserole is refrigerated overnight, remove it from the fridge 30 minutes before baking. It may require an extra 10-15 minutes cooking time.
- Frozen diced potatoes make this quick and easy. If you'd like to use your own fresh potatoes, peel and dice 1/2". Cook the diced potatoes (either boil, roast, or panfry) until tender. Shredded hashbrowns work too.
- If adding other vegetables, be sure to pre-cook any that have a lot of water (like mushrooms).
- Remove the casserole from the fridge while the oven preheats.
- After baking, let the casserole rest for about 10-15 minutes before cutting into squares and serving.
Nutrition Information
Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.
Course Breakfast
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I enjoy this recipe with spicy sausage and chopped jalapeno along with piminto cheese
That sounds delicious!
Delicious Recipe! Can you make this without potatoes? Would cooking time or measurements be altered?
I haven’t tried this dish without potatoes so I can’t say for sure Racquel. If you try it I would love to hear how it turns out!
I make with Jimmy Dean hot sausage and hash browns. Get taste, not heat
Can this be made 24+ hours ahead of time if kept refrigerated?
Yes! This dish is a perfect make-ahead dish. Enjoy Rose!
Absolutely delicious! Very rich and gets a nice crust in the oven.
Made this last week, and it was so easy and delicious. I used breakfast sausage, and roasted red peppers instead of the red pepper, as the red peppers in the store were expensive and looked half rotted. Drained the peppers and green chiles well. This one is a keeper. My sister stayed with my Mom this weekend, and I wanted something easy for her. She said they ate it every morning until it was gone, and wanted the recipe.
So glad this recipe was a hit with you and your family Laura!
Delish and so easy!
Can you freeze the sausage breakfast casserole leftovers
Yes, leftovers can be frozen. I like to thaw overnight in the fridge and reheat in the microwave, oven or air fryer.