Sausage Egg Casserole with Veggies
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This veggie-packed sausage egg casserole is the perfect healthy dish to serve a crowd. It’s dairy-free and gluten-free, but still packs a ton of flavor!
This might just look like “another egg casserole” to you but I am so excited to share this recipe because it’s SO good! Growing up, my mom always made a special breakfast for us to wake up to on Christmas morning. Sometimes it was a sweet breakfast and sometimes it was something more savory like this egg bake.
PS: If you’re looking for a sweet holiday breakfast option, check out my vegan pumpkin cinnamon rolls or this gingerbread baked oatmeal.
I love that this breakfast casserole is fancy enough for a holiday breakfast, but also simple enough to make on Sunday as part of your weekly meal prep for a healthy, savory breakfast all week long!
I honestly love having an egg breakfast ready to eat when I wake up in the morning.
How Do You Know When an Egg Casserole is Done?
The good thing about this sausage and egg casserole is that you pre-cook almost all of the ingredients before baking the final product. The only things that really need to cook in the oven are the eggs! You do want to make sure the eggs are fully cooked and there are a few ways to check that:
- Eyeball it. The least precise of the three… obviously. The eggs will be set in the center aka no longer jiggly. Again, very official way of knowing, but I actually use this method a lot!
- Insert a knife into the center. If the knife comes out clean, that means the eggs are fully cooked through! If it comes out a little goopy, the eggs need to cook longer. Always check in the center of the casserole because the dish will bake from the outside > in.
- Use a thermometer. The most precise method to knowing if the casserole is done! Insert the thermometer in the center of the casserole – if it reads 160ºF or above, your casserole is done!
How Do You Freeze Breakfast Casserole?
I personally like to meal prep this breakfast casserole and just keep it in the fridge for the week, but if you know you won’t be able to finish it throughout the week, you can absolutely freeze it! I like to portion out the casserole and freeze the individual pieces. When you’re ready to eat, let it thaw in the fridge and simply reheat in the oven or microwave. It will likely get warm fast (about 30-60 seconds) in the microwave.
How to Make Sausage Egg Casserole
For this egg casserole we’re adding roasted sweet potatoes and sausage, so you start by roasting your sweet potato chunks.
While your sweet potatoes are in the oven, cook the breakfast sausage in a large skillet over medium-high heat, until no longer pink. Transfer the cooked sausage to a large bowl and set aside. Add oil to the same skillet and cook the onion, red bell pepper and mushrooms until the onions are translucent. Then add kale and cook for a few more minutes to allow the kale to wilt. When the veggies are done cooking, add to the bowl with the sausage along with the roasted sweet potatoes.
Whisk the eggs, milk and spices in a separate bowl and then pour the egg mixture over the sausage and veggie mixture. Spray a large baking dish with cooking spray and then pour the sausage and egg mixture into the casserole dish. Bake in a preheated oven until the eggs are set.
More Breakfast Recipes for a Crowd
- Apple Cinnamon Baked Oatmeal
- Pumpkin Baked Oatmeal
- Roasted Sweet Potato Kale Frittata
- Gingerbread Baked Oatmeal
- French Toast Bake
- Healthy Breakfast Casserole
- Slow Cooker Pumpkin Pie Oatmeal
- Kale and Feta Crustless Quiche
- Vegetarian Hash Brown Breakfast Casserole
- Make-Ahead Breakfast Casserole
If you enjoyed this recipe, please consider leaving a ⭐ star rating and let me know how it went in the 📝 comments below.
Sausage Egg Casserole
Ingredients
- 1 large sweet potato, diced into 1/4 inch chunks
- cooking spray, olive, avocado or coconut oil
- 1 pound ground breakfast chicken or turkey sausage
- 2 teaspoons olive or avocado oil
- 1/2 cup chopped onion
- 2 cups sliced fresh mushrooms
- 1 cup chopped red bell pepper
- 2 cups torn kale
- 2 teaspoons dried thyme
- ½ teaspoon garlic powder
- ½ teaspoon salt
- ½ teaspoon ground black pepper
- 12 eggs
- ½ cup non-dairy milk*
Instructions
- Preheat oven to 400°F.
- Spray sweet potato chunks with cooking spray and roast in the oven until tender, about 30 minutes, tossing at the halfway point.
- Meanwhile, cook sausage in a large skillet over medium-high heat until no longer pink, about 5-7 minutes. Transfer sausage to a bowl and add 2 teaspoons of oil to the same skillet. Once hot, add onion, red bell pepper and mushrooms to the skillet. Cook until onions are translucent, about 6-7 minutes, then add kale. Cook for another 2-3 minutes to allow kale to wilt. Remove from heat and transfer veggies to the bowl with the sausage.
- Add to the roasted sweet potato into the bowl as well.
- Whisk eggs, milk, thyme, garlic, salt and pepper together in a medium bowl. Add egg mixture to the sausage and veggie mixture. Pour into a large baking dish (9 X 13) sprayed with cooking spray.
- Bake in the preheated oven until set, about 20 to 25 minutes, but the cook time will depend on the size of your baking dish. Let stand for 5 minutes and serve.
- Store leftovers in an air-tight container in the fridge for 4-5 days.
Notes
- If you’re not worried about the casserole being dairy-free, you can use 2% milk.
- To prep this casserole in advance, simply do everything through step 5, cover baking dish and place in the fridge until you’re ready to bake it.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Like This Recipe? Rate & Comment Below!
Delish..I will definitely be making this again and again.
Woo! This makes me so happy to hear, Candace! I really appreciate you coming back to leave a comment and star rating as well!
This is definitely,my favourite egg recipe!! Today, is my third time, making this recipe. I usually add more veggies and eggs, than the recipe calls for and add more cooking time. Today, I added zucchini and I can’t wait to see how it tastes. I’m gluten and dairy intolerant and it’s nice to make something so good and flavourful! Thank you for sharing your recipes. God Bless you and your loved ones a keep you, all safe.🤗
Ahh yay!! So pumped to hear that you’ve been loving this casserole, Lisa. Thanks for coming back to leave a review. I so appreciate it!
Cooked/baked this yesterday for Christmas Breakfast! It was delicious! Thank you for the recipe! ❤️
I did add 2 lbs of chicken breakfast sausage (#FreshThyme) because MY family loves meat lol it worked out very well! nothing but happy people after the meal !!!
Thank you for making me look like a good cook!👩🏽🍳
Ahh, this makes me so happy to hear! Thanks for the review, Ginger.
How many eggs should I use?
Hey Sherry – The recipe calls for 12 eggs.
This egg casserole looks perfect for Christmas morning brunch! I was wondering if I could leave the milk out of the recipe completely as I have family members who do not do well with even the dairy-free milk options.
I haven’t tried it without the extra liquid, so I’m not sure how it would bake without the milk. Let me know if you try it!
I jsit learned I’m lactose intolerantso I’m new at all of this. What type of dairy free milk do you recommend?
Hey Laura – my go-to’s are almond + oat milk!
Hi! I’m looking to make this for an upcoming family vacation. Can I prep this on Wednesday and keep it in the fridge until we bake it Friday morning? Looks so yummy and we have dairy free & gluten free issues in the family lol! Thank you!!
Hey Courtney – I’m sure it’d be okay, but I’d maybe prep it Thursday instead because the veggies might get soggy sitting in the liquid that long. Keep me posted how it turns out for you!
This recipe is SUCH A HIT! My boyfriend and I love meal-prepping it for the week. He’s a huge cheese guy & couldn’t believe how flavorful it was once I told him it didn’t even have cheese! Such a satiating yet healthy meal.
I love hearing that! So glad this casserole was a hit with you and your boyfriend!
Hi Brittany. I cannot wait until my husband and I try this recipe. If I am making this recipe for the two of us, do I just cut the recipe in half (& cooking time too?)? Thanks in advance for your reply.
Hey Symantha – Yes, if you want to make this just for two people, you can cut the recipe in half and use a smaller pan (maybe an 8×8 pan). It might need a few less minutes if you cook it in a smaller pan, but if you still cook it in a 9×13 pan it will be much thinner and need less time. I’d just keep an eye on it. Also, this recipes works great as meal prep for the week if you make a full batch it’ll last for 4-5 days stored in the fridge. 🙂
This looks delicious…first time making something gluten and dairy free. Was wondering can hashbrowns or a regular potato be substituted??
I don’t know what is gluten free and what isn’t??
Hey Shannon – Yes, potatoes are gluten-free. 🙂 Let me know how this casserole turns out for you if you try it!