Sausage Egg Casserole (with Mushrooms and Feta)

This Sausage Egg Casserole (with Mushrooms and Feta) is one of my favorite combinations for a delicious breakfast. And if you’re not a mushroom fan, this tasty low-carb high-protein breakfast would be delicious without the mushrooms.

PIN the recipe for Sausage Egg Casserole to try it later!

I’m featuring this Sausage Egg Casserole (with Mushrooms and Feta) For my Friday Favorites pick. And this is one of the breakfast combinations I really like. This dish has browned turkey or pork breakfast sausage, sauteed mushrooms, and Feta cheese baked with just a little egg to hold it together.

And I’d say in this Sausage Egg Casserole the emphasis is on the other ingredients and not so much on the eggs. Of course it’s no secret that I’m nuts for Feta cheese, and the combination of the Feta and the seasoned breakfast sausage was perfect in this recipe.

And for me this is such a delicious breakfast option!I hope you will try it soon!

What ingredients do you need for this recipe?

(This is only a list of ingredients; please scroll down for complete printable recipe. Or if you use the JUMP TO RECIPE link at the top of the page, it will take you directly to the complete recipe.)

• turkey breakfast sausage links
• sliced mushrooms
• Olive Oil (affiliate link)
• crumbled feta cheese
• eggs
•  cream (optional)
• Spike Seasoning or any all-purpose seasoning blend (affiliate link)
• fresh-ground black pepper
• Sliced green onions (optional, but good)

What makes Sausage Egg Casserole (with Mushrooms and Feta) so flavorful:

This recipe has lots of sausage, mushrooms, and Feta, and fewer eggs than most of my breakfast casserole recipes!

What Sausage did I use for the Egg Casserole recipe?

I love turkey breakfast sausage links for this type of breakfast dish, but pork sausage will also be delicious!

How low in carbs is the Sausage Egg Casserole (with Mushrooms and Feta)?

This breakfast with some of my favorite ingredients has only 5 net carbs and 23 grams of protein!

How to Make Sausage Egg Casserole (with Mushrooms and Feta):

(This is only a summary of the steps for the recipe; please scroll down for complete printable recipe. Or if you use the JUMP TO RECIPE link at the top of the page, it will take you directly to the complete recipe.)

1. Preheat oven to 375F/190C. Spray baking dish with non-stick spray of olive oil.
2. I cut the sausages in half and browned them for a few minutes; then put sausage in the baking dish.
3. Add a little more olive oil to the pan and cook mushrooms until they’ve released their liquid and are starting to brown.
4. Layer mushrooms, Feta, and green onions over the sausage.
5. Beat the eggs with the milk or half and half and pour over, then season with Spike Seasoning (affiliate link) or another all-purpose seasoning blend that’s good with eggs. I like to take a fork and stir slightly so everything is well-distributed in the eggs.
6. Bake until the eggs are set and starting to brown slightly on top, 30-35 minutes, depending on the dish and your oven.
7. Serve hot, garnished with more green onion if desired.
8. The Sausage Egg casserole is good with a little sour cream on top if you’re a sour cream fan like I am.

Make it a Low-Carb Breakfast:

Sausage Egg Casserole (with Mushrooms and Feta) would be delicious with either of these low-carb muffins, which bake at the same temperature:

• Savory Breakfast Muffins
• Almond Flour Zucchini Muffins

More Low-Carb Breakfasts to bake on the Weekend:

I included this recipe as one of my favorite Keto breakfasts to make on the weekend and eat all week; check it out if you’re also a fan of doing that.

Weekend Food Prep:

This Sausage Egg Casserole recipe has been added to a category called Weekend Food Prep to help you find recipes you can prep or cook on the weekend and eat during the week!

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Yield: 6 servings

Sausage Egg Casserole (with Mushrooms and Feta)

Prep Time 20 minutes

Cook Time 30 minutes

Total Time 50 minutes

This Sausage Egg Casserole (with Mushrooms and Feta) is one of my favorite combinations for a tasty breakfast that's low-carb and gluten-free. And I love to make this and have leftovers to reheat for breakfast later!

Ingredients

• 14 oz turkey breakfast sausage links (see note)
• 16 oz. sliced mushrooms (see notes)
• 2 tsp. olive oil, or more, depending on your pan
• 3/4 cup crumbled feta cheese
• 8 eggs, well beaten
• 2 T cream (see notes)
• 1 tsp. Spike Seasoning (Use any all-purpose seasoning blend that’s good with eggs if you don’t have Spike.)
• fresh-ground black pepper to taste
• Sliced green onions (optional, but good)

Instructions

1. Preheat oven to 375F/190C. Spray 9″ X 11″ casserole dish with nonstick spray.
2. Heat a little olive oil in a non-stick pan over medium-high heat. Cut each piece of sausage in half or thirds, then brown sausage lightly in frying pan.
3. Put sausage into casserole dish, rinse the frying pan if you need to, then add a little more olive oil if needed and cook mushrooms until they’re softened and starting to brown.
4. Put cooked mushrooms over the sausage, then add crumbled feta cheese and green onions.
5. Beat eggs with the milk or half and half or cream, then pour eggs over the other ingredients and season with Spike Seasoning (affiliate link), and black pepper if desired. I like to take a fork and stir slightly so all ingredients are evenly distributed throughout the dish.
6. Bake 30 minutes or slightly longer, until eggs are well set and barely starting to brown on top.  (I baked the one in these photos for about 36 minutes.) Serve hot.
7. This Sausage Egg Casserole will keep in the fridge for at least a week and can be quickly reheated in a microwave. (Don’t reheat for too long or the eggs will get rubbery.

Notes

Use pork breakfast sausage links if you prefer.

I buy pre-sliced mushrooms for this.

Use half and half or milk instead of cream if you prefer. (This is probably optional.)

This recipe was created by Kalyn.

Nutrition Information

Yield

6

Serving Size

1
Amount Per Serving Calories 354Total Fat 26gSaturated Fat 9gUnsaturated Fat 13gCholesterol 376mgSodium 946mgCarbohydrates 7gFiber 2gSugar 3gProtein 23g

Nutrition information is automatically calculated by the Recipe Plug-In I am using. I am not a nutritionist and cannot guarantee 100% accuracy, since many variables affect those calculations.

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Low-Carb Diet / Low-Glycemic Diet / South Beach Diet Suggestions:
Sausage Egg Casserole would be a good breakfast for low-carb or Keto eating plans and all phases of the original South Beach Diet. Use the lowest fat turkey sausage you can find if you’re making this for South Beach. Other low-carb diets may prefer pork sausage, especially for Keto.

Find More Recipes Like This One:

Use Breakfast Recipes to find more recipes like this one. Use the Diet Type Index to find recipes suitable for a specific eating plan. You might also like to follow Kalyn’s Kitchen on Pinterest, on Facebook, on Instagram, on TikTok, or on YouTube to see all the good recipes I’m sharing there.

Historical Notes for this Recipe:
This combination of sausage, mushrooms, and Feta with eggs was first posted in 2006! The recipe was updated with better photos and was last updated with more information in 2026.