This tastes like chicken parm in its most honest form: melted mozzarella, sharp Parmesan, and marinara that actually sticks to the chicken.
The difference is the absence of breadcrumbs, which strips the dish down to 35 minutes and about six net carbs per serving.
That speed depends entirely on rotisserie chicken. Raw chicken would double the time and the dishes, and the recipe was built to avoid both.
The 165°F target still matters even with pre-cooked meat; the center needs to hit it for the cheese to set properly against the sauce.
What This Is and When to Make It
A keto chicken parmesan casserole strips the classic down to what actually matters: crisp-edged cheese, tangy marinara, and chicken that carries the whole thing. The breadcrumb coating stays in the past where your macros left it.
Rotisserie chicken or whatever’s leftover from Sunday does the work here.
Chop or shred it, stir with jarred marinara and a shake of Italian seasoning, layer mozzarella and Parmesan on top, and bake at 350°F until the cheese bubbles and browns in spots, 20 to 25 minutes.
Prep takes about 10 minutes if you move deliberately, so the whole thing clocks in around 35 minutes total. One casserole dish, one bowl, and a Tuesday night that doesn’t ask more of you than that.
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Ingredients
Everything here is probably in the pantry already, or close to it.
Rotisserie chicken works perfectly, so no one needs to cook raw chicken specifically for this dish. That single shortcut turns this from a weekend project into a Tuesday night solution.
- 2 cups cooked shredded chicken
- 1 cup marinara sauce
- 1 cup shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese
- 1 teaspoon garlic powder
- 1 teaspoon Italian seasoning
- Salt and pepper to taste
- 1/4 cup fresh basil, chopped (optional)
The basil is worth grabbing if you pass the produce section. It brightens the whole dish against all that cheese and tomato, but the casserole holds up fine without it.
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The Method
- Set the oven to 350°F so it has time to come up to temperature while you build the casserole.
- Mix the shredded chicken with marinara, garlic powder, Italian seasoning, salt, and pepper in a large bowl. Stir until everything is evenly coated.
- Spread the mixture into a greased casserole dish, working it into an even layer.
- Top with mozzarella and Parmesan, covering the surface as evenly as you can.
- Bake 20–25 minutes, until the cheese is melted and bubbly and the center reaches 165°F on an instant-read thermometer.
- Rest 5 minutes before serving so the layers set and no one burns their mouth.
- Garnish with fresh basil if you have it on hand.
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Yield and Timing
This keto chicken parmesan casserole yields about 6 servings and comes together fast enough for a Tuesday night.
Prep takes roughly 10 minutes, mostly shredding rotisserie chicken and mixing the sauce, and the oven does the rest in about 25 minutes. That puts total time at 35 minutes from counter to table.
The calorie count lands around 350 per serving, though I should be straight with you: that is an estimate built from standard nutrition labels, not lab testing.
Your specific brands of marinara, cheese, and chicken will shift the number in either direction.
As for how it fits your eating plan, the dish leans heavily on fat and protein with minimal carbs, which slots neatly into a typical keto macro framework.
I am not going to invent grams for you; the brands in your cart matter too much for that to be useful.
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Make-Ahead and Storage
Leftovers keep in an airtight container in the fridge for 3 to 4 days, or freeze up to 3 months in something well-sealed.
Reheat gently so the cheese keeps its texture: microwave works for single portions, or run it through a 350°F oven if you have time.
Making it ahead is straightforward. Assemble the full casserole, cover it, and refrigerate unbaked.
When you are ready, it goes straight from cold into the oven with about 10 extra minutes on the bake time. That cold start is the only real adjustment; the cheese still bubbles and the center still hits 165°F.
For meal prep, this holds up well. Portion it into individual containers after baking and you have lunches or dinners set for several days, which is how a lot of busy weeknights get solved.
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Substitutions and Additions
Ground turkey or ground chicken both work if you want a different texture from shredded chicken.
The dish cooks through the same way, though you will want to break up the meat as it browns so you do not end up with clumps under the cheese.
Spinach, bell peppers, or zucchini can go straight into the chicken mixture.
Sauté them first so they do not weep into the casserole and make the bottom watery. This is especially worth doing with zucchini, which holds more moisture than most cooks expect.
A cheese sauce in place of marinara gives you a creamy, white-lasagna sort of profile instead of the usual red.
It is not the classic chicken parmesan taste, but it works on a night when tomatoes feel too sharp or you are feeding someone who avoids nightshades.
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Frequently Asked Questions
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Can I make this casserole ahead of time?
Yes. Assemble the full casserole, cover it, and refrigerate unbaked.
It goes straight from cold into the oven with about 10 extra minutes on the bake time. The cheese still bubbles and the center still reaches 165°F.
What can I use in place of chicken?
Ground turkey or ground chicken both work.
Break up the meat as it browns so you do not end up with clumps under the cheese. The dish cooks through the same way.
Is this casserole suitable for meal prep?
Yes.
Portion it into individual containers after baking and you have lunches or dinners set for several days. Leftovers keep in the fridge for 3 to 4 days, or freeze up to 3 months.
Can I add vegetables to this dish?
Yes. Spinach, bell peppers, or zucchini can go straight into the chicken mixture.
Sauté them first so they do not weep into the casserole and make the bottom watery. Zucchini especially holds more moisture than most cooks expect.
How do I know when it’s done?
The cheese should be melted and bubbly, and the center should reach 165°F on an instant-read thermometer. Rest it 5 minutes before serving so the layers set.
Can I eat chicken parmesan on keto?
Yes, when you skip the breadcrumb coating.
This version uses shredded chicken, marinara, and cheese baked without breading. It leans heavily on fat and protein with minimal carbs, which fits a typical keto macro framework.
Is parmesan cheese allowed on a keto diet?
Yes.
Parmesan is low in carbs and high in fat and protein, so it works well for keto. This recipe uses half a cup of grated Parmesan on top of the casserole.
Is Costco’s rotisserie chicken keto?
Most plain rotisserie chicken is keto-friendly, including Costco’s.
Check the ingredient label for added sugars or starches in the seasoning. This recipe specifically calls for rotisserie chicken as a shortcut.
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