Keto Chicken Parmesan Casserole

The smell of bubbling cheese and Italian herbs filled my tiny apartment kitchen on a rainy Tuesday night. I had been experimenting with keto cooking for months, but everything felt like it was missing something—until I threw together this casserole with leftover rotisserie chicken. My roommate poked her head in, asking what smelled like an Italian grandmother had moved in, and I knew I'd stumbled onto something special.

Last summer, my cousin who had started keto visited for the weekend. I made this casserole, expecting polite tolerance, but she went back for thirds and asked for the recipe before she even finished her plate. Now it's our go-to comfort food whenever we're both craving something that feels like a hug in a baking dish.

Ingredients

• 2 cups cooked chicken breast: Rotisserie chicken works beautifully here and saves so much time—just shred it with your hands or give it a quick dice
• 1 ½ cups sugar-free marinara sauce: Read your labels carefully because some brands sneak in added sugar—I've learned this the disappointing way
• 1 cup shredded mozzarella cheese: Part of this gets mixed into the chicken layer while the rest creates that gorgeous golden blanket on top
• ½ cup grated Parmesan cheese: The salty, nutty flavor here is what gives this dish its authentic Italian-American soul
• 4 oz cream cheese, softened: This secret ingredient makes the chicken layer incredibly creamy and helps bind everything together
• 1 teaspoon dried Italian herbs: Dried herbs actually work better here than fresh because they distribute evenly through the mixture
• ½ teaspoon garlic powder: Fresh garlic can burn and turn bitter in casseroles, but powder gives consistent flavor throughout
• ¼ teaspoon salt and ¼ teaspoon black pepper: Adjust these if your rotisserie chicken was already heavily seasoned
• ¼ cup crushed pork rinds: Totally optional but that crunch on top makes you forget you're eating low-carb
• 1 tablespoon chopped fresh basil: The bright, fresh pop of green and flavor makes everything taste restaurant-worthy

Instructions

Get your oven ready:

Preheat to 375°F and give your casserole dish a quick coating of cooking spray or olive oil so nothing sticks

Mix up the creamy chicken base:

In a large bowl, combine the chicken, softened cream cheese, half the mozzarella, half the Parmesan, and all those dried herbs and spices until everything is well blended

Create the first layer:

Spread the chicken mixture evenly across your prepared dish, pressing it down gently to create a solid foundation

Add the saucy middle:

Pour that sugar-free marinara over the chicken layer, using the back of a spoon to spread it without disturbing what's underneath

Top it off with cheese:

Sprinkle the remaining mozzarella and Parmesan across the top, then scatter those crushed pork rinds if you're going for maximum crunch

Bake until golden and bubbly:

Slide it into the oven for 25–30 minutes—you'll know it's done when the cheese is perfectly golden and the sauce is bubbling up around the edges

Let it rest and garnish:

Give the casserole 5 minutes to set before sprinkling with fresh basil, or you'll lose all that gooey cheese when you scoop it

Save

This recipe saved me during a hectic week when I had zero energy to cook but still wanted something comforting. Now it's the meal I turn to when life feels overwhelming and I need a reminder that simple, nourishing food can fix almost anything.

Make It Your Own

I've discovered that adding sautéed spinach or chopped cooked bacon to the chicken mixture takes this from great to unforgettable. The spinach adds nutrition while barely changing the flavor profile, and bacon makes everything taste better—it's just a fact of kitchen life.

Perfect Pairings

A crisp green salad with an olive oil dressing cuts through the richness beautifully. When I'm feeling fancy, I'll roast some broccoli or cauliflower with garlic and parmesan on a separate sheet pan while the casserole bakes.

Storage and Reheating

This keeps remarkably well in the refrigerator for up to 4 days and actually tastes even better the next night when all the flavors have had more time to mingle. I've also frozen individual portions for those emergency weeks when cooking feels impossible.

• Reheat uncovered so the cheese gets crispy again instead of sad and rubbery
• Add a splash of water or extra marinara if it seems dry after refrigerating
• The pork rind topping won't stay crunchy after freezing, so add fresh ones when reheating

Save

There's something deeply satisfying about serving a dish that makes everyone forget they're eating health food. This casserole has become proof that comfort food and keto living aren't mutually exclusive.

Recipe Questions & Answers

→ Can I make this ahead of time?

Yes, assemble the entire casserole up to 24 hours in advance and refrigerate. Add 5-10 minutes to the baking time if baking cold from the refrigerator.

→ What can I use instead of pork rinds?

Crushed pork rinds provide traditional crunch, but you can substitute almond flour, crushed pork-free keto breadcrumbs, or simply add extra cheese for the topping.

→ Is this casserole freezer-friendly?

Absolutely. Bake completely, cool, then wrap tightly in foil and freeze for up to 3 months. Thaw overnight and reheat at 350°F until warmed through.

→ Can I use raw chicken instead of cooked?

You'll need to cook the chicken first. Raw chicken won't cook through properly in the layered casserole. Use rotisserie chicken, leftover cooked chicken, or poach chicken breast specifically for this dish.

→ How do I know when it's done baking?

The casserole is ready when the cheese is bubbling and golden brown with slightly crispy edges, typically after 25-30 minutes at 375°F.