Low Carb Pizza Casserole Recipe

If you’ve been craving pizza but want to keep things healthy without giving up flavor, this Low Carb Pizza Casserole Recipe is an absolute game changer. It transforms all the best parts of your favorite pizza into a hearty, comforting casserole packed with vibrant veggies, savory Italian sausage, spicy pepperoni, and gooey mozzarella. With a cauliflower base taking the place of traditional dough, this dish is perfect for those watching their carbs but unwilling to compromise on that irresistible pizza taste. Trust me, every bite is a warm, cheesy hug that invites you back for more!

Ingredients You’ll Need

These ingredients may be simple, but each one plays a crucial role in building layers of rich flavors and textures that make this dish so special. From the tender cauliflower to the spicy pepperoni and melty cheese, every element contributes to the taste, texture, and colorful appeal of this casserole.

• Cauliflower florets (14 ounces): Using bite-sized pieces keeps the texture just right and acts as a low carb pizza crust alternative.
• Pepperoni (2.5 ounces): Adds a spicy, meaty kick that enhances the classic pizza flavor.
• Italian Sausage (2 pounds): Brings in savory richness and a satisfying protein punch; be sure to remove casings before cooking.
• Olive Oil (1 tablespoon): Essential for sautéing mushrooms and adding a subtle fruity depth.
• Mushrooms (8 ounces, sliced): Adds earthiness and umami, plus a nice tender texture once sautéed.
• Green Pepper (1, chopped): Offers a fresh crispness and a pop of vibrant color.
• Mozzarella cheese (12 ounces, shredded): The star of melty, gooey cheese that blankets the casserole in cheesy goodness.
• Low Carb Pasta Sauce (1.5 cups): Using a quality sauce like Rao’s Homemade Marinara keeps the dish flavorful without hidden sugars.
• Parmesan cheese (1/4 cup, powdered): Adds a sharp, salty finish and helps create a delicious crust on top.
• Italian Seasoning (1 teaspoon): A perfect blend of herbs that ties all the flavors together beautifully.

How to Make Low Carb Pizza Casserole Recipe

Step 1: Steam the Cauliflower

Start by steaming your cauliflower florets until just tender, about 3 minutes in the microwave with a bit of water. Be careful not to overcook them—you want them soft but still holding their shape, as this creates a fantastic base that’s neither mushy nor underdone.

Step 2: Drain and Dry

After steaming, drain the cauliflower well and pat it dry with a paper towel. Removing the excess moisture is key to avoiding a soggy casserole and helps everything bake up just right.

Step 3: Preheat the Oven

Set your oven to 400 degrees Fahrenheit to get it ready for baking the assembled casserole to bubbly, cheesy perfection.

Step 4: Cook the Italian Sausage

Brown the Italian sausage in a skillet over medium-high heat for about 15 minutes. Cooking it thoroughly and draining excess fat ensures a rich but not greasy flavor in your casserole.

Step 5: Sauté the Mushrooms

Using the same skillet, add olive oil and sauté sliced mushrooms over medium-high heat for 10 minutes to release and evaporate their moisture—this step intensifies their flavor and keeps your casserole from getting watery.

Step 6: Prepare the Casserole Dish

Spray a 13×9 inch casserole dish with non-stick spray for easy cleanup. Then spread half a cup of your low carb pasta sauce evenly across the bottom to start building that saucy base.

Step 7: Combine the Veggies and Meat

In a large mixing bowl, toss together the steamed cauliflower, cooked Italian sausage, sautéed mushrooms, and chopped green pepper so that all the flavors begin to mingle evenly.

Step 8: Layer the First Half

Spread half of the mixture evenly in the casserole dish, then drizzle with half a cup of pasta sauce. Follow this with half the pepperoni slices—press them gently into the mixture—and sprinkle six ounces of shredded mozzarella cheese on top.

Step 9: Add the Remaining Layers

Now spread the rest of the veggie and meat mixture over the first melted cheese layer. Add the remaining pepperoni slices, sauce, and mozzarella cheese just as you did before, layering flavors and textures beautifully.

Step 10: Mix Parmesan and Italian Seasoning

In a small bowl, combine powdered Parmesan cheese with Italian seasoning for a flavorful topping that will form a golden, savory crust.

Step 11: Sprinkle the Topping

Sprinkle the Parmesan and herb mix evenly over the casserole, then arrange the remaining pepperoni slices on top to create that classic pizza look.

Step 12: Bake the Casserole

Pop the dish into your preheated oven and bake for 30 minutes, or until everything is heated through and the cheese is melted and bubbly. Your kitchen will soon be filled with irresistible aromas!

How to Serve Low Carb Pizza Casserole Recipe

Garnishes

A sprinkle of fresh basil leaves or chopped parsley adds a lovely fresh note and a burst of color that complements the warm, cheesy casserole perfectly. For a little extra zing, drizzle lightly with chili oil or crushed red pepper flakes.

Side Dishes

This casserole pairs wonderfully with a crisp green salad tossed in a light vinaigrette or a simple side of roasted vegetables. Both add freshness and balance out the richness, making your meal feel complete but not heavy.

Creative Ways to Present

For a crowd-pleaser, serve the casserole in individual ramekins or small cast iron skillets, allowing each guest their own personal cheesy pizza experience. You can also garnish each serving with a few extra pepperoni slices or a dollop of sour cream to elevate the presentation.

Make Ahead and Storage

Storing Leftovers

Once cooled, transfer your leftover Low Carb Pizza Casserole Recipe into an airtight container and refrigerate. It will keep well for 3 to 4 days, making it perfect for quick meals later in the week.

Freezing

This casserole freezes beautifully! Wrap tightly with foil and then place in a freezer-safe container or bag. Freeze for up to 3 months, and you’ll have a delicious meal ready anytime you need it.

Reheating

To reheat, thaw in the fridge overnight if frozen, then bake uncovered at 350 degrees Fahrenheit for 20-25 minutes until warmed through and the cheese is melty once again. Alternatively, microwave individual portions for a fast meal fix.

FAQs

Can I use fresh pasta sauce or do I need to use store-bought?

You can absolutely use fresh homemade pasta sauce if you prefer, as long as it is low in carbs and sugar. Making your own allows you to customize the seasoning and keep it fresh and flavorful.

Is this recipe suitable for a gluten-free diet?

Yes! Since the casserole uses cauliflower instead of traditional pizza dough, it is naturally gluten-free, making it a great option for those with gluten sensitivities or celiac disease.

Can I substitute the Italian sausage with another protein?

Definitely! Ground turkey, chicken sausage, or even a vegetarian sausage alternative work well. Just adjust cooking times accordingly to ensure they are fully cooked before adding to the casserole.

How spicy is this recipe? Can I adjust it?

The pepperoni and Italian sausage add some mild to moderate spice, but you can easily adjust the heat by selecting milder sausage or skipping the pepperoni if you want a less spicy dish.

Is there a way to make this recipe dairy-free?

Yes, swapping the mozzarella and Parmesan for dairy-free cheese alternatives will make the dish suitable for those avoiding dairy. Keep in mind the texture and meltiness might vary slightly depending on the brand used.

Final Thoughts

I truly hope you give this Low Carb Pizza Casserole Recipe a try because it’s one of those dishes that feels like a little celebration every time you eat it. It’s hearty, delicious, and a fantastic way to enjoy all your favorite pizza flavors without the carb overload. Whether you’re cooking for family, meal prepping, or just craving something cozy, this recipe delivers every time!

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