This Paleo Sausage Egg Casserole recipe is an easy breakfast option. It’s gluten free, low carb, and Whole30 compatible, and a simple meal for a hungry family. Or make it on the weekend as meal prep for weekday breakfasts!
I am a big fan of meal planning, particularly for breakfast. In the mornings all I want to do is heat something up and get on with the rest of my day. This is why I like an egg casserole so much – it’s easy to make and even easier to reheat.
There’s not a lot of hands-on time with this dish, but if you want even less, buy pre-sliced mushrooms. You’ll have this easy breakfast casserole in the oven in no time, leaving you to enjoy your coffee in peace.
How to make sausage egg casserole
Preheat the oven to 375 degrees F.
Wash the leeks in water, making sure to get between layers, then dry them. Use the large knife and cutting board, to cut the leeks in half, lengthwise. Using only the white and light green part, slice then loosely chop them. This should equal between 1.5 to 2 cups, chopped. Set aside.
Place a pan on the stove and turn the heat to medium. Put the sausage in the pan, breaking it up with a wooden spoon or other utensil.
Cook the sausage until it’s no longer pink, then remove the sausage from the pan and set on top of a plate with a paper towel to drain the fat.
Add the ghee to the pan and throw in the chopped leeks and sliced mushrooms. Cook, stirring often with the wooden spoon, until both are soft, 8-10 minutes.
While mushrooms and leeks are cooking, grease a 9×13 dish with some ghee.
In a large bowl, break 10 eggs and pour in the coconut milk. Add in the salt and pepper, then whisk everything together until well combined.
Put the cooked sausage into the greased 9×13 pan in an even layer, then spread the cooked leeks and mushrooms evenly over the sausage. Pour the egg mixture into the dish as well.
The mixture should cover most of the meat and vegetables.
Place the dish into the oven and cook for 40 to 45 minutes, rotating the pan around halfway through the cooking time, until the egg mixture is set and fully cooked.
Take dish out of the oven and let cool slightly (5-7 minutes) before serving. Add chopped scallions on top if desired.
You may have a couple of questions about sausage egg casseroles – let’s get to those now.
What kind of sausage is best for a breakfast casserole?
I use breakfast sausage for this casserole as it tends to be pretty mild. If you like a little spice you could use Italian sausage. Or if you want something lighter you can do a chicken or turkey sausage.
Can egg sausage casserole be frozen?
Yes they can! For detailed directions, see this post on freezing egg casseroles.
Can sausage egg casserole be made ahead of time?
If you’d like to prepare this casserole ahead of time, I would cook the sausage and the veggies, then store them in airtight containers in the fridge. When you’re ready to bake the casserole, grease a casserole dish, make the egg mixture, and assemble the casserole. Bake as directed.
RECIPE TIPS
- Don’t forget to grease the pan! If you don’t, the casserole will stick to the edges and be very difficult to get out.
- The recipe calls for cremini mushrooms as I think they have more flavor than white mushrooms, but any mushrooms will work.
- This is a great recipe for meal prep! Cut the casserole into squares then wrap them individually and put them in the fridge. To reheat, wrap a piece in a paper towel (this helps absorb moisture) and heat it in the microwave until warm all the way through.
If you’re looking for more breakfast recipes, check these out:
- Leftover Breakfast Hash (GF, Paleo, Whole30)
- Gluten Free Breakfast Quesadilla
- Easy Sheet Pan Breakfast (GF, Paleo, Whole30)
- Potato Breakfast Hash (GF, Whole30)
- Spinach Avocado Smoothie (GF, Paleo)
Or if you’re searching for more paleo & Whole30 compatible recipes, try one of these:
- Chicken Curry Zoodle Bowl
- Gyro Salad
- Ground Beef & Cabbage Stir Fry
- Chicken Cobb Salad
- Grilled Shrimp Tacos
Pin this Sausage Egg Casserole for Later!
Paleo Sausage Egg Casserole
Equipment
- One Large Pan
- One 9x13 Baking Dish
- One Large Plate
- A Paper Towel
Ingredients
- ½ pound breakfast sausage
- 2-3 large leeks white and light green parts only
- 8 oz crimini mushrooms sliced
- 1 tbsp ghee plus more to grease pan
- 10 eggs
- ⅓ cup full-fat coconut milk
- 1 tsp salt
- ¼ tsp pepper
- 2 chopped scallions optional
Instructions
- Turn oven on to 375 degrees F.
- Wash the leeks in water, making sure to get between layers, then dry them. Use the large knife and cutting board, to cut the leeks in half, lengthwise. Using only the white and light green part, slice then loosely chop them. This should equal between 1.5 to 2 cups, chopped. Set aside.
- Place a pan on the stove and turn the heat to medium. Put the sausage in the pan, breaking it up with a wooden spoon or other utensil. Cook the sausage until it's no longer pink, then remove the sausage from the pan and set on top of a plate with a paper towel to drain the fat.
- Add the ghee to the pan and throw in the chopped leeks and sliced mushrooms. Cook, stirring often with the wooden spoon, until both are soft, 8-10 minutes.
- While mushrooms and leeks are cooking, grease a 9x13 dish with some ghee.
- In a large bowl, break 10 eggs and pour in the coconut milk. Add in the salt and pepper, then whisk everything together until well combined.
- Put the cooked sausage into the greased 9x13 pan in an even layer, then spread the cooked leeks and mushrooms evenly over the sausage. Pour the egg mixture into the dish as well. The mixture should cover most of the meat and vegetables.
- Place the dish into the oven and cook for 40 to 45 minutes, rotating the pan around halfway through the cooking time, until the egg mixture is set and fully cooked.
- Take dish out of the oven and let cool slightly (5-7 minutes) before serving. Add chopped scallions is desired.
Notes
- Don't forget to grease the pan! If you don't, the casserole will stick to the edges and be very difficult to get out.
- The recipe calls for cremini mushrooms as I think they have more flavor than white mushrooms, but any mushrooms will work.
- This is a great recipe for meal prep! Cut the casserole into squares then wrap them individually and put them in the fridge. To reheat, wrap a piece in a paper towel (this helps absorb moisture) and heat it in the microwave until warm all the way through.
- This recipe calls for breakfast sausage, but you can use any type of sausage you like. If you want a spicier flavor, try Italian sausage. Or if you want something lighter you can do a chicken or turkey sausage.
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