Kalyn's Kitchen

Low-Carb Deconstructed Pizza Casserole (Video)

Low-Carb Deconstructed Pizza Casserole is a delicious comfort food casserole that the whole family is going to love. And this is the most popular low-carb casserole recipe on my blog!

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Watch the video to see if you’d like to make Low-Carb Deconstructed Pizza Casserole!


Title photo for Low-Carb Deconstructed Pizza Casserole

For today’s Friday Favorites featured recipe I’m reminding you about this Low-Carb Deconstructed Pizza Casserole that’s been a hit with so many of my readers, and if you sometimes struggle with feeling deprived when you give up carbs, I promise that this deconstructed pizza is a low-carb comfort food recipe that’s going to feel like a treat!

When the idea for a low-carb casserole with pizza flavors popped into my mind, I just couldn’t wait to make it. Then when the casserole was cooking I couldn’t wait to eat it, and after I tried it, I couldn’t wait to share the recipe! This is something I’ve made many times at my house, and I promise it will be a hit with anyone who likes pizza.

Process shots collage photo for Low-Carb Deconstructed Pizza Casserole

How to Make Low-Carb Deconstructed Pizza Casserole:

(Scroll down for complete printable recipe with nutritional information.)

  1. Dump a can of diced tomatoes into a colander and rinse; then spread them out to dry on a paper towel.
  2. Squeeze turkey Italian sausage out of the casings and brown well, then put it into a small casserole dish.
  3. Put the drained tomatoes over the sausage and season.
  4. Wash the mushrooms, pat dry, and cut into thick slices.
  5. Saute mushrooms until they give up their liquid and are starting to brown.
  6. Then layer mushrooms over the sausage-tomato mixture.
  7. Cut pepperoni in half (I use kitchen shears. (affiliate link)
  8. Spread the grated mozzarella over the casserole and top with pepperoni.
  9. Bake about 25 minutes, or until the ingredients are heated through and the cheese is starting to brown. (I baked mine a bit too long, don’t get distracted!)
Close-up photo Low-Carb Deconstructed Pizza Casserole

Serve hot and enjoy! And I promise this will hit the spot any time you’re really craving pizza.

More Low-Carb Pizza Ideas You Might Like:

Low-Carb Pepperoni Pizza Chicken Bake ~ Kalyn’s Kitchen
Low-Carb Portobello Pizza ~ Lauren’s Latest
Low-Carb Egg-Crust Breakfast Pizza ~ Kalyn’s Kitchen
Sausage and Mushroom Pizza Bowls ~ Shutterbean
55+ Delicious Low-Carb and Gluten-Free Recipes with Pizza Flavors ~ Kalyn’s Kitchen

Weekend Food Prep:

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

Close-up photo Low-Carb Deconstructed Pizza Casserole

Low-Carb Deconstructed Pizza Casserole

Yield 6 servings
Prep Time 25 minutes
Cook Time 25 minutes
Total Time 50 minutes

Low-Carb Deconstructed Pizza Casserole is a comfort food casserole the whole family will enjoy!


  • 1 can diced tomatoes, well drained ((14.5 oz. can; do not use petite dice tomatoes)
  • 5 links uncooked turkey or pork Italian sausage (19.5 oz.)
  • 2 tsp. + 2 tsp. olive oil
  • 1/2 tsp. dried oregano
  • salt and fresh-ground pepper to taste (I didn't use much salt.)
  • 12 oz. fresh mushrooms, washed and cut into thick slices (I used brown Cremini mushrooms.)
  • 1 1/2 cups grated Mozzarella cheese
  • 15 slices pepperoni, cut in half (I used regular pepperoni, but you can use turkey pepperoni if you prefer)


  1. Preheat oven to 400F/200C.
  2. Spray an 8 inch x 11 inch glass casserole dish with non-stick spray or olive oil.
  3. Pour the diced tomatoes into a colander placed in the sink and rinse with cold water. Let tomatoes drain a minute or two, then spread them out on paper towels to dry (or blot dry with another paper towel on top.)
  4. While tomatoes dry, heat 2 tsp. olive oil in a large non-stick frying pan, squeeze the sausage out of the casing, and cook sausage over medium-high heat until it's nicely browned, breaking it apart as it cooks. (I use an old-fashioned potato masher (affiliate link) to break the sausage apart.)
  5. While sausage cooks, wash mushrooms, pat dry, and slice into thick slices.
  6. When the sausage is done make a layer of sausage in the bottom of the casserole dish and top with the drained tomatoes, spreading them out over the top of the sausage.
  7. Season with dried oregano, salt, and fresh-ground black pepper. (I didn't use much salt.)
  8. Rinse out the pan if needed, then heat the other 2 tsp. of olive oil over medium-high heat. When the pan is hot add the mushrooms and cook, stirring a few times, until all the liquid is released and the mushrooms are starting to brown.
  9. Layer the mushrooms over the sausage-tomato mixture.
  10. Cut pepperoni in half.
  11. Sprinkle the grated Mozzarella over the top of the casserole and lay the pepperoni pieces on top of the cheese, spacing them evenly so the whole top is covered with pepperoni.
  12. Bake about 25 minutes, or until the cheese is melted and starting to brown. Serve hot.


I used my favorite turkey Italian sausage for this recipe; use pork sausage if you prefer.

This recipe created by Kalyn.

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 289Total Fat: 18gSaturated Fat: 7gUnsaturated Fat: 10gCholesterol: 85mgSodium: 561mgCarbohydrates: 6gFiber: 2gSugar: 3gProtein: 26g

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.

If you make this recipe I'd love to hear how it turns out. Leave a star rating or share on social media with the hashtag #KALYNSKITCHEN, thanks!

Thumbnail image for Low-Carb Deconstructed Pizza Casserole

Low-Carb Diet / Low-Glycemic Diet / South Beach Diet Suggestions:
Low-carb diet plans will probably prefer pork sausage and pepperoni and full-fat cheese for this Low-Carb Deconstructed Pizza Casserole. If you’re following the South Beach Diet, they would recommend using turkey Italian sausage, turkey pepperoni, and reduced fat Mozzarella for this recipe. With those ingredients, this would be approved for any phase of South Beach.

Find More Recipes Like This One:
Use Casserole Recipes to find more recipes like this one. Use the Recipes by Diet Type photo index pages to find more recipes suitable for a specific eating plan. You might also like to Follow Kalyn’s Kitchen on Pinterest to see all the good recipes I’m sharing there.

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    230 Comments on “Low-Carb Deconstructed Pizza Casserole (Video)”

  1. This was good but very dry. Did I do something wrong?

  2. So glad to see this was ordering pizza for rhe family and so wantwd something great. I found this and tried it and it was Awsome . Thanks

  3. Why not petite diced tomatoes?

  4. I just popped this in the oven. Can’t wait to taste it. Instead of mushrooms and olives I used fresh jalapeno peppers. Kids not a fan of mushrooms and olives but next time I’ll make it the way my husband and I want it. 😊

  5. My husband said he would eat this every night! With 3 boys (11,11,13) I made a full 9×11 casserole and it was gone! I upped most of the ingredients to fill the dish. I also made garlic toast for them. Have your tried making this the night before and cooking the next day? Seems like a good one to get the kids to pop in the oven on our busy nights.

    • So glad to hear it was a hit! Sounds like a challenge feeding all those boys, glad they enjoyed it. I’m sorry but I haven’t made it ahead and refrigerated, then cooked later. It seems like it would work, although I would let it come to room temperature before you bake. I’d love to hear how it goes if you try that, thanks!

  6. I used your recipe as a jumping off point for dinner last night. It was so good! My teen boy balked at a “no crust” pizza, then came back for 3 helpings! I added fresh sautéed spinach and used petite tomatoes that were well drained. I also served with cottage cheese (cold on the side) but it would have been good mixed with the tomatoes for a little more sauce. SO GOOD! I’ll add a lot more spinach next time.

  7. I made this for dinner tonight and it was fabulous! I did add 2 layers of thinly sliced zucchini for a little more veg and fiber and some black olives b/c I love ’em on pizza, otherwise followed recipe exactly. Will definitely make this one again! Maybe artichoke hearts next time . . . ?

  8. It does not seem like the video is working? Can you double check on it please?
    Thank you

    • It’s working for me (on iMac desktop). There are so many variables that affect videos and they’re hosted through another company so I’m not really able to troubleshoot. Hope it will start up for you.

  9. That was really really good!!!!
    Thank you

  10. Quick question regarding servings… If this was the only thing I made for dinner for two people, would you expect it to stretch two meals based on experience?

  11. I’m not able to provide nutritional information for the recipes for several reason, including the additional time it takes, the difficulty in doing it accurately, and the sheer number of recipes on my site. I give two links after the recipe itself (where it says “Nutritional Information”) for suggestion of how you can get that information. That’s all I can do at this time. Thanks for understanding.

  12. This was so good I did not even miss the crust! Thanks!

  13. I made this 2 nights ago and my hubby said it’s a keeper! The only thing I think I’ll do is add a little bit of pizza sauce/spaghetti sauce with the tomatoes next time. It was a bit dry for our taste, but that’s just us. Love the recipe!

  14. Oh boy! This looks amazing. I would also add green peppers and some black olives.

  15. My husband really liked this recipe… I’ve been trying low carb recipes now for 3 months it is hard fo find ones that the husband likes, bit you have created one.. Thank You…

  16. You can figure this yourself by looking up the carb content for each ingredient.
    Just Google
    “Nutrition info xyz”

    You can also enter it into an app like my fitness pal or a recipe builder and it will give you all the totals.
    Just divide the total for all ingredients by the number of servings you decide upon for the counts per portion.

    After a while on keto, you’ll be able to do the math in your head. Lol
    Especially if you’re diabetic. Lol
    Welcome to the keto world!!
    We rock!!!!

    • Plus in every recipe I give a link to a place where you can enter the ingredients and it will calculate it for you, in addition to a suggestion to use Yummly, which calculates it (although they are not always 100% accurate.

  17. This is a great idea! Will make something similar. Did you forget to list the garlic and/or onions you used? That would be in any pizza sauce/most Italian dishes. Or are your family allergic to them? It does look nice 🙂 Garlic is essential tho 🙂 Thanks again!

  18. I just want to add my praise to this fantastic recipe! I am thrilled at how well it turned out.
    Even my husband – a devoted pizza and carb lover – thought it was delicious. (Though admittedly, he wrapped his servings up in a tortilla. Ha!)
    Thanks for creating a recipe both my husband and I can enjoy together 🙂

  19. Looks good 
    6 days on Keto 😬 barely.  Just wondering why not petite dice tomatoes (I have those in my pantry) 

    • I used the chunkier diced tomatoes in this to give more structure to the recipe. I worried that the petite dice wouldn’t work the same way but you can try them.

  20. YOU MUST TRY THIS recipe. My go to for a LC lunch. Make a pan on Sunday divide into 5 dishes. I do use ground Italian seasoned chicken for the sausage. Heat and eat. I will also take 1 1/2 cups lettuce and dump this on top hot or cold for pizza salad.