This low-carb keto eggplant lasagna casserole combines the tastes of two popular dishes. It makes a very delicious and filling meal.

This is an easy Italian style casserole that tastes like a cross between eggplant parmesan and lasagna. I used hot Italian sausage and sliced it up after it was cooked.
You can use either bulk or link sausage in mild or hot. I thought the spicy sausage gave this low-carb eggplant casserole a nice flavor. My eggplant was just picked fresh out of the garden.
If the eggplant is store bought, you may want to salt it and let it sit in a colander to remove any bitterness. And, you can remove the skin if desired.
I've been finding all sorts of delicious ways to cook up eggplant. A few of my favorites, including this keto eggplant lasagna casserole, are in this recipe collection.
Eggplant Parmesan Casserole is another great dish that can easily be made low carb using a pork rind based breading. What's your favorite way to cook eggplant?

📋 Ingredients
I used the following ingredients to make my keto eggplant lasagna:
- sausage
- tomato or marinara sauce (sugar-free)
- eggplant
- cottage cheese
- parmesan cheese
- egg
- mozzarella cheese
- oregano
But there are a variety of substitutions that can be made within this recipe if you'd like to change it up. To start with, the sausage can be any heat level your family enjoys. You can also use chorizo or hamburger.
And although eggplants were used, other low carb vegetables like spinach would work as well. Layering thin slices of zucchini works too!
Also, if you don't have cottage cheese or not a fan, you can replace it with ricotta cheese. I use either cheese in this low-carb lasagna recipe.
🔪 Instructions
To get started on the recipe, I first preheat the oven to 350°F. Then, I cook up my sausage in a skillet, remove from heat, and mix in tomato sauce into cooked sausage.
While the meat is cooking, I’ll get the eggplant slices ready by cutting the eggplant lengthwise into thin strips. The strips are then fried in a little oil until brown and softened. A layer of the cooked eggplant slices is then placed at the bottom of an 8×8 baking dish.

The cheese mixture is prepared next by mixing egg with cottage cheese, parmesan cheese, and ¼ cup of the mozzarella cheese. This mixture is then spread over the eggplant.
Next, the sausage mixture is spread over the cheese. A little oregano is sprinkled over the sausage layer then it’s all topped off with the remaining mozzarella cheese.

The layered dish is then popped into the preheated oven and bake for about 30 minutes or until cheese has browned on top.

🍽️ Serving suggestions
Whenever I am making a casserole dish that is topped with cheese, I love to finish the dish off with something green. For this low carb eggplant casserole, I topped it off with some fresh basil. If you have parsley on hand, that will work too!
This is a nice comforting meal that your family is sure to enjoy. The eggplant lasagna taste is sure to please.

🙋 FAQs
For our version there are 376 calories, 22 g of protein and just 7 grams of carbs! These numbers can fluctuate depending on the ingredients that you decide to use in your version of this low carb eggplant lasagna recipe!
In short, the answer is YES! Just one cup of eggplant contains 20 calories, 4.8 grams of carbs (2.9 being sugar), 1 g of protein and 3 g of fiber. Eggplant is high in antioxidants and fiber while being low in calories! It's a great addition to any keto diet.
📚 Related recipes
If you love cheesy casseroles, here's a few more delicious keto recipes you may enjoy.
- Chicken cordon bleu casserole combines creamy cheese sauce and tender chicken with ham pieces.
- Cheeseburger casserole is a delicious and easy way to enjoy a burger and some of your favorite toppings all in one dish.
- Keto Philly cheesesteak casserole is a delicious and easy meal that is perfect for any night of the week.
- Low-carb taco casserole is a great way to get your taco fix without all of the carbs.
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📖 Recipe

Keto Eggplant Lasagna Casserole
Video
Ingredients
- 1 pound sausage cooked and drained
- 8 ounces tomato sauce
- 1 medium eggplant about 2 pounds
- 1 ¼ cups cottage cheese
- ¼ cup parmesan cheese
- 1 large egg beaten
- 2 cups mozzarella cheese
- ½ teaspoon oregano
Instructions
- Preheat oven to 350 degrees F. Mix tomato sauce into cooked sausage. Set aside.
- Slice eggplant lengthwise into thin strips. Fry eggplant slices in a little oil until brown and softened. Line bottom of an 8×8 baking dish with half cooked eggplant.
- Mix egg with cottage cheese, parmesan cheese, and ¼ cup of the mozzarella cheese. Spread half cheese mixture over eggplant.
- Layer the sausage mixture over the cheese then sprinkle oregano over it. Repeat layers.
- Sprinkle the remaining mozzarella cheese on top.
- Bake in 350 oven for about 30 minutes or until cheese has browned on top.
Notes
Low Carb Sweeteners | Keto Sweetener Conversion Chart

Nutrition
Additional Info
Note on Nutritional Information
Nutritional information for the recipe is provided as a courtesy and is approximate only. We cannot guarantee the accuracy of the nutritional information given for any recipe on this site. Erythritol carbs are not included in carb counts as it has been shown not to impact blood sugar. Net carbs are the total carbs minus fiber.
Unauthorized use of this material without written permission from Lisa MarcAurele is strictly prohibited unless for personal offline purposes.
Single photos may be used, provided that full credit is given to LowCarbYum.com along with a link back to the original content.
Post updated in February 2019. Originally published August 2010.
TREYNELL FREDERICK
Can I use Ricotta cheese instead of cottage cheese? I so wanna try this
Lisa MarcAurele
Yes! Either ricotta or cottage cheese can be used in the recipe.
Debi cavanaugh
Great recipe tweaked a little with more veggies mushrooms onions and peppers and dusted and baked eggplant with egg and almond flour - great taste ... Thanks for sharing all enjoyed!! Just starting cutting carbs and beginning keto diet.
Joyce
Can this eggplant parmesan casserole be frozen? If so, do you make it completely and then freeze it? I made this for my family and everyone loved it even my grandsons.
Lisa MarcAurele
I find that eggplant can get watery when frozen. But you could drain any excess liquid if that happens. I'd bake it first and then freeze. Then I'd let it thaw in the refrigerator and then just reheat in the oven on a low temp.
Low carber
I’m excited to make this, but am confused by the notes on how to cook the eggplant. In the recipe instructions, it says to sauté it. In the video, it looks raw (could totally be wrong!), and in the comments it says that baking the eggplant is large preferred. What’s the best way to prep it?
Lisa MarcAurele
You can sauté or roast. It's also a good idea to salt the slices first and allow them to sit for about 30 minutes so moisture can be drawn out before cooking.