Low Carb High Protein Rotisserie Chicken Casserole – Easy, Comforting, and Meal-Prep Friendly

This casserole brings together juicy rotisserie chicken, tender veggies, and a creamy, cheesy sauce that tastes like comfort food without the carb overload. It’s quick to assemble, perfect after a busy day, and makes amazing leftovers. If you’re watching carbs or trying to hit your protein goals, this dish checks every box.

You get hearty portions, simple prep, and flavors that feel like a warm hug. No complicated steps, just real food that’s satisfying and wholesome.

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Low Carb High Protein Rotisserie Chicken Casserole – Easy, Comforting, and Meal-Prep Friendly

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Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Servings: 6 servings

Ingredients Method

Ingredients

  

• 4 cups shredded rotisserie chicken (skin removed, light and dark meat mixed)
• 3 cups riced cauliflower (fresh or frozen, thawed if frozen)
• 2 cups small broccoli florets (lightly chopped)
• 1 small yellow onion, finely diced
• 3 cloves garlic, minced
• 1 cup plain Greek yogurt (2% or full-fat)
• 4 oz cream cheese, softened
• 1/2 cup unsweetened almond milk or chicken broth
• 1 cup shredded cheddar cheese
• 1/2 cup shredded mozzarella or Monterey Jack
• 2 large eggs, lightly beaten
• 2 tbsp olive oil or avocado oil
• 1 tsp Dijon mustard
• 1 tsp smoked paprika
• 1/2 tsp dried thyme or Italian seasoning
• 1/4–1/2 tsp red pepper flakes (optional)
• Salt and black pepper to taste
• Fresh parsley or chives, chopped, for garnish (optional)

Method

 

1. Prep your oven and pan: Preheat oven to 375°F (190°C). Grease a 9x13-inch casserole dish with a little oil or cooking spray.
2. Sauté aromatics: In a large skillet over medium heat, add olive oil. Cook onion with a pinch of salt for 3–4 minutes until soft. Add garlic and cook 30 seconds until fragrant.
3. Cook the veggies: Add riced cauliflower and broccoli to the skillet. Season with salt, pepper, smoked paprika, and thyme. Cook 5–7 minutes, stirring, until the cauliflower loses excess moisture and the broccoli turns bright green and slightly tender.
4. Make the creamy base: In a large bowl, whisk together Greek yogurt, softened cream cheese, almond milk (or broth), Dijon, and eggs until smooth. Stir in half the cheddar and half the mozzarella. Add red pepper flakes if using. Taste and adjust salt and pepper.
5. Combine: Stir the shredded rotisserie chicken into the creamy base. Fold in the cooked veggie mixture until everything is evenly coated.
6. Assemble the casserole: Spread the mixture into the prepared dish. Top with the remaining cheddar and mozzarella.
7. Bake: Bake uncovered for 22–28 minutes, until the edges are bubbly and the top is lightly golden. If you want deeper color, broil for 1–2 minutes at the end, watching closely.
8. Rest and garnish: Let the casserole rest 8–10 minutes so it sets. Sprinkle with chopped parsley or chives. Slice and serve warm.

What Makes This Recipe So Good

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• Fast weeknight win: Using rotisserie chicken cuts the cooking time way down while still packing in flavor.
• Low carb, high protein: Each serving is built around lean chicken, eggs, and cheese for sustained energy.
• Veggie-forward without feeling “diet”: Cauliflower rice and broccoli add bulk and fiber while keeping carbs in check.
• Customizable: Swap veggies, change cheeses, or add a little heat. It’s hard to mess up.
• Great for meal prep: Reheats beautifully and keeps well in the fridge or freezer.

What You’ll Need

• 4 cups shredded rotisserie chicken (skin removed, light and dark meat mixed)
• 3 cups riced cauliflower (fresh or frozen, thawed if frozen)
• 2 cups small broccoli florets (lightly chopped)
• 1 small yellow onion, finely diced
• 3 cloves garlic, minced
• 1 cup plain Greek yogurt (2% or full-fat)
• 4 oz cream cheese, softened
• 1/2 cup unsweetened almond milk or chicken broth
• 1 cup shredded cheddar cheese
• 1/2 cup shredded mozzarella or Monterey Jack
• 2 large eggs, lightly beaten
• 2 tbsp olive oil or avocado oil
• 1 tsp Dijon mustard
• 1 tsp smoked paprika
• 1/2 tsp dried thyme or Italian seasoning
• 1/4–1/2 tsp red pepper flakes (optional)
• Salt and black pepper to taste
• Fresh parsley or chives, chopped, for garnish (optional)

Step-by-Step Instructions

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1. Prep your oven and pan: Preheat oven to 375°F (190°C).

   Grease a 9×13-inch casserole dish with a little oil or cooking spray.

2. Sauté aromatics: In a large skillet over medium heat, add olive oil. Cook onion with a pinch of salt for 3–4 minutes until soft. Add garlic and cook 30 seconds until fragrant.
3. Cook the veggies: Add riced cauliflower and broccoli to the skillet.

   Season with salt, pepper, smoked paprika, and thyme. Cook 5–7 minutes, stirring, until the cauliflower loses excess moisture and the broccoli turns bright green and slightly tender.

4. Make the creamy base: In a large bowl, whisk together Greek yogurt, softened cream cheese, almond milk (or broth), Dijon, and eggs until smooth. Stir in half the cheddar and half the mozzarella.

   Add red pepper flakes if using. Taste and adjust salt and pepper.

5. Combine: Stir the shredded rotisserie chicken into the creamy base. Fold in the cooked veggie mixture until everything is evenly coated.
6. Assemble the casserole: Spread the mixture into the prepared dish.

   Top with the remaining cheddar and mozzarella.

7. Bake: Bake uncovered for 22–28 minutes, until the edges are bubbly and the top is lightly golden. If you want deeper color, broil for 1–2 minutes at the end, watching closely.
8. Rest and garnish: Let the casserole rest 8–10 minutes so it sets. Sprinkle with chopped parsley or chives.

   Slice and serve warm.

Storage Instructions

• Fridge: Cool completely, then store in an airtight container for 4 days.
• Freezer: Portion into freezer-safe containers and freeze up to 2 months. Thaw overnight in the fridge before reheating.
• Reheat: Microwave individual portions 1–2 minutes, or bake at 325°F (165°C) for 15–20 minutes until hot. Add a splash of broth if it looks dry.

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Why This is Good for You

• High-quality protein: Rotisserie chicken supplies complete protein to support muscle recovery and satiety.
• Lower carbs, steady energy: Cauliflower rice and broccoli keep carbs minimal while offering fiber and micronutrients.
• Smarter fats: Greek yogurt and a modest amount of cheese add creaminess with protein, not just fat.
• Balanced meal in one pan: Protein, non-starchy veggies, and enough fat to feel satisfied—without a carb-heavy side.

Common Mistakes to Avoid

• Skipping the veggie sauté: Raw cauliflower rice releases water in the oven and makes the casserole soupy.

  Pre-cook to drive off moisture.

• Not seasoning in layers: Season the veggies, then the sauce, then adjust at the end. This keeps flavors bright.
• Overbaking: Too long in the oven dries out the chicken and curdles the sauce. Pull it when edges bubble and the top is golden.
• Watery yogurt: If your yogurt is very thin, strain it for 15 minutes or use less almond milk to keep the sauce creamy.
• Giant broccoli pieces: Large florets don’t cook through evenly.

  Chop small for even texture and easy slicing.

Alternatives

• Different veggies: Swap broccoli for zucchini, spinach, or green beans. Sauté watery veggies longer.
• Dairy adjustments: Use lactose-free Greek yogurt and cheese, or try cottage cheese blended smooth in place of cream cheese.
• Heat and spice: Add diced jalapeños, chipotle powder, or a buffalo sauce swirl in the creamy base.
• Cheese swaps: Try pepper jack, Swiss, or provolone. Parmesan on top adds a salty crust.
• Extra protein: Stir in crumbled turkey sausage or diced Canadian bacon.

  Keep total salt in check.

• No eggs: Skip eggs and add 1/4 cup more cream cheese for binding; bake until set and bubbly.

FAQ

Can I use leftover cooked chicken instead of rotisserie?

Yes. Any cooked, shredded chicken works. If it’s a bit dry, add a splash more broth or almond milk to the sauce.

Is this casserole keto-friendly?

It’s very low in carbs and can fit most keto plans.

Check your yogurt and almond milk labels to avoid added sugars, and adjust portions to your macros.

Can I make it ahead?

Assemble the casserole up to 24 hours in advance, cover, and refrigerate. Add 5–10 minutes to the bake time since it will be cold from the fridge.

What can I use instead of cauliflower rice?

Finely chopped steamed cabbage or sautéed riced broccoli are good low-carb swaps. Just cook them down to remove excess moisture first.

How do I prevent a grainy sauce?

Make sure cream cheese is softened and whisk thoroughly with yogurt and liquid before adding eggs.

Don’t overbake, which can cause curdling.

Can I add a crunchy topping?

For low carb, use crushed pork rinds mixed with Parmesan and a little olive oil. Sprinkle on during the last 10 minutes of baking.

How big is a serving?

In a 9×13 dish, cut into 6–8 pieces. For higher protein, aim for 1/6 of the pan; for lighter portions, 1/8 works well.

In Conclusion

This Low Carb High Protein Rotisserie Chicken Casserole is the kind of simple recipe that saves weeknights and supports your goals.

It’s creamy, savory, and loaded with lean protein and veggies. The ingredients are flexible, the method is easy, and the leftovers are a gift. Keep a rotisserie chicken on your shopping list, and you’ll always be a few steps from a comfort meal you can feel good about.