Low Carb Zucchini Lasagna

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Low Carb Zucchini Lasagna delivers all the cozy, cheesy lasagna comfort with baked zucchini layers instead of noodles, so it’s lighter but still totally satisfying. The cottage cheese filling adds extra protein, and one simple step (pre-baking the zucchini) keeps it thick, sliceable, and not watery!

366 CAL 22g CARBS 16g FAT 34g PROTEIN 7
1 Comment

If you’ve ever tried zucchini lasagna and ended up with a soupy pan, this version fixes that. Pre-baking the zucchini planks pulls out moisture so the lasagna sets up like it should, with clean slices and that perfect saucy-cheesy bite.

The sauce is hearty too, with a mix of lean ground turkey and turkey sausage plus mushrooms for extra savory flavor. It’s one of those dinners that feels like a project the first time, but once you’ve made it, you’ll want it in your freezer for busy weeks (future you will be thrilled!).

And if you love the flavors but don’t want to commit to a full lasagna, you can mix the cottage cheese filling with Parmesan and spices and stir it into pasta for a quick, protein-boosted “lasagna vibe” dinner!

A variety of fresh ingredients for cooking: sausages, minced meat, cottage cheese, zucchinis, tomato sauce, herbs, chopped onions, garlic, and mushrooms.

Before You Get Started

Here are a few things worth knowing before you start cooking so everything goes smoothly.

  • Prevent watery lasagna: Don’t skip baking and blotting the zucchini planks. It’s the difference between sliceable lasagna and zucchini soup.
  • Zucchini swap: Yellow summer squash works the same way, and thin eggplant planks are a great option if you want to switch it up.
  • Cheese and meat swaps: Ricotta works instead of cottage cheese, and you can swap ground chicken or beef for the turkey. Turkey sausage adds big flavor fast, but you can use regular Italian sausage if that’s what you have.

How to Make Low Carb Zucchini Lasagna

Here’s a quick overview of how to pull this recipe together step-by-step.

1. Bake And Blot The Zucchini

Slice the zucchini into planks, season lightly with salt and pepper, and bake at 400 degrees until just starting to soften. Blot well with paper towels to remove moisture.

  • Pro tip: This step matters. The drier the zucchini, the thicker and more sliceable your lasagna will be!

2. Cook The Meat And Veggies

Sauté onion and mushrooms until soft, then add garlic, ground turkey, and turkey sausage. Cook until browned and no longer pink.

3. Simmer The Sauce

Stir in marinara sauce and let it simmer briefly so the flavors come together and the sauce thickens slightly.

4. Mix The Cottage Cheese Filling

Stir together cottage cheese, Parmesan, Italian seasoning, garlic powder, and black pepper until combined. Taste before adding salt since Parmesan can be salty.

5. Layer The Lasagna

Spread a layer of sauce in the baking dish, add zucchini, then dollop and spread the cheese mixture. Repeat the layers, finishing with zucchini slices, sauce, and mozzarella on top.

6. Bake And Rest

Bake covered until hot and bubbly, then uncover to melt and lightly brown the cheese. Let it rest for 15 minutes before slicing so it sets.

Recipe Tips and Tricks

Here are the best tips and pro tricks to help this recipe turn out perfectly every time.

  • Sauce thickness: If your marinara is thin, simmer it a little longer or stir in 1 tablespoon tomato paste so the lasagna isn’t runny.
  • Use lasagna noodles: If you are not too concerned about keeping this recipe low carb, you can use regular lasagna noodles. Buy no-cook ones to save yourself one step. Consider layering in some regular noodles and some zucchini noodles for the best of both worlds.
  • Modify the vegetables: Instead of mushrooms, use whatever your family likes in this lasagna. Try baby spinach, diced bell peppers, diced carrots, celery, or kale.
  • Chunky vs smooth filling: If you don’t love cottage cheese texture, blend it quickly before mixing with the spices for a smoother ricotta-like filling.
  • Make it vegetarian: Skip the turkey and sausage and bulk up with mushrooms, spinach, zucchini, or bell peppers, then simmer the sauce until thick.
  • Add more spice: Add up to 1 teaspoon red pepper flakes to the sauce if you want a little heat.
  • Cheese swaps: Romano, pecorino, or asiago work instead of Parmesan, and you can swap mozzarella for provolone or gouda for a different vibe.
  • Freeze a pan: This freezes well. Wrap tightly and freeze, then thaw overnight in the fridge before baking or reheating.
  • Quick “lasagna vibe” dinner: Mix the cottage cheese filling with a scoop of marinara and toss with hot pasta for a fast, protein-boosted meal when you don’t want to layer anything!

Serving Ideas

Here are some easy and delicious ways to serve this recipe.

A savory slice of lasagna on a gray plate, topped with melted cheese and sprinkled with parsley.

Storage & Reheating

Here’s how to store, reheat, and enjoy your leftovers.

  • Storage: Cool completely, then refrigerate in an airtight container for up to 3 days.
  • Freezer: Freeze slices or a whole pan for up to 3 months. Thaw overnight in the fridge for the best texture.
  • Reheating: Reheat in the oven for the best texture, or microwave in short bursts until warmed through.
  • Leftovers: Chop a slice and stir into sautéed spinach or zucchini for a quick skillet meal, or reheat and serve over extra greens for a lasagna “bowl.”

Frequently Asked Questions

Here are some of the most commonly asked questions about this recipe:

The zucchini likely wasn’t baked and blotted enough, or the sauce was too thin. Bake the planks, blot well, and keep the sauce thick so the lasagna can set.

Keep it covered with foil for most of the bake, then uncover only at the end to melt and lightly brown. If your oven runs hot, shorten the uncovered time.

Yes. The 15-minute rest helps the layers set, so you get clean slices instead of a saucy pile. It’s worth it!

Yes. Assemble up to 24 hours ahead and refrigerate. Bake straight from the fridge and add a little extra time until hot and bubbly.

A slice of lasagna topped with golden cheese and fresh parsley sits on a white plate with a black fork and knife.
The Recipe
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Low Carb Zucchini Lasagna

366 CAL 22g CARBS 16g FAT 34g PROTEIN 7
PREP TIME: 20 Min
COOK TIME: 1 Hours
TOTAL TIME: 1 Hours, 20 Min
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Ingredients

US METRICS
  • 4 zucchini
  • 1 tsp. olive oil
  • 1 onion, diced
  • 4 cloves garlic, minced
  • 1/2 lb. 95% lean ground turkey
  • 1/2 lb. 95% lean ground turkey sausage
  • 2 cups mushrooms
  • 20 oz. marinara sauce
  • 15 oz. low fat cottage cheese
  • 1/2 cup Parmesan cheese
  • 1 tsp. garlic powder
  • 1/2 tsp. black pepper
  • 1 cup part skim shredded mozzarella

Instructions

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1

Preheat the oven to 400 degrees. Cut the zucchini into 1/4 inch planks. Sprinkle with salt and pepper and place on a prepared baking sheet. Bake for 10-15 minutes. Blot with paper towel to remove any excess moisture.

Thinly sliced zucchini arranged on a baking sheet lined with parchment paper, seasoned with salt and pepper. Nearby, there's olive oil and fresh parsley.
2

Meanwhile, heat the olive oil over medium heat. Add the onion and mushrooms. Cook for 7-10 minutes until becoming soft and translucent. Add the garlic, turkey, and turkey sausage. Brown until no longer pink.

A pan of raw ground beef mixed with chopped mushrooms and onions, being stirred with a wooden spatula.
3

Pour in the marinara sauce. Simmer until tender, about 10 minutes. Remove from heat.

A close-up of a skillet containing rich, meaty lasagna sauce with ground meat, diced onions, and a tomato base.
4

Stir together the cottage cheese, Parmesan, Italian spices, and pepper in a large bowl.

A white bowl filled with cottage cheese and sprinkled with paprika, giving it a reddish hue.
5

Spray a baking dish with cooking spray and begin assembling the lasagna. Start by adding 1/3 of the sauce to the pan. Cover with a layer of zucchini. Spread 1/2 of the cheese mixture over. Repeat with sauce, zucchini, and cottage cheese. Add one more layer of sauce and zucchini.

A white oval dish contains a layered zucchini casserole, with roasted zucchini slices on top.
6

Sprinkle mozzarella cheese on top. Cover with foil and bake for 30 minutes. Remove foil and bake for 10-15 more minutes until cheese is melted and beginning to brown.

Oval dish filled with shredded cheese on top of a layered casserole, set on a white surface.
7

Let rest for 15 minutes before serving.

Hands holding a baked lasagna topped with melted cheese and herbs on a checkered cloth.
Nutritional Facts
Serving Size: 1 slice
Amount Per Serving
Calories 366
Calories from Fat 146
% Daily Value *
Total Fat 16g
25%
Saturated Fat 6g
29%
Monounsaturated Fat 1g
0%
Polyunsaturated Fat 0g
0%
Cholesterol 81mg
27%
Sodium 1149mg
50%
Total Carbohydrate 22g
7%
Dietary Fiber 5g
19%
Sugars 15g
Protein 34g

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Nutritional Values provided are estimates only and may vary based on the preparation method.

Notes

You can use 2 cups of any veggies you like in place of the mushrooms. Also looks for a thick marinara sauce to avoid a watery lasagna. If for any reason your lasagna ends up looking watery, make sure to let it sit for 15-20 minutes and some of the liquid will be absorbed. This shouldn't happen but could if your zucchini isn't roasted long enough or you have a thinnner marinara sauce.
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About the author Meet Kristen McCaffrey
Hi, I’m the cookbook author, recipe developer, and food enthusiast behind Slender Kitchen. I am obsessed with making healthy food that is easy to prepare and absolutely delicious. Meal planning is my secret weapon and I hope I can make meal time easier for you with our tried and tested recipes and foolproof meal plans. Learn More
1 Comment
On Low Carb Zucchini Lasagna
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Mitchell
April 22, 2018 - 13:12
I am a male in my upper fifties a bit over weight and watching my diet . I maid this about two weeks ago for the first time since than i am making it for the third time today. Everyone who has tried it has loved it. Besides tne baby portabella's I have added black olive's . Fantastic dish and I dont have to worry about eating to much in the last three weeks I have lost seven and a half pounds. Thank you kristen & slender kitchen.

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