Easy Low Carb Chicken Casserole – Cheesy, Protein-Packed & Keto-Friendly

This Easy Low Carb Chicken Casserole is the ultimate comfort food — rich, creamy, packed with tender chicken and veggies, and loaded with melted cheese. But here’s the twist: it’s totally low-carb and keto-friendly! 🙌 With wholesome ingredients like cooked chicken breast, bacon, broccoli, spinach, and a cheesy blend of mozzarella and cheddar, this casserole is satisfying without the carb overload. Tossed in a flavorful ranch dressing and baked to golden perfection, it’s a true family favorite — whether you’re following a keto lifestyle or just want a quick, protein-rich meal. Want more low-carb casserole ideas? Don’t miss this Keto Chicken Broccoli Casserole or this Cheesy Cauliflower Bake. Let’s get cooking!

You don’t need much to make this casserole, but here’s what you’ll want to have ready:
Large skillet – for sautéing garlic and spinach
Large mixing bowl – to combine ingredients
9×13-inch casserole dish – standard baking dish size
Cutting board + knife – for chopping garlic and bacon
Cheese grater – if shredding fresh cheese
Oven mitts – because melty cheese = hot dish!

Meat & Protein:

4 cups cooked chicken breast (shredded or chopped)
8 slices cooked bacon (chopped)

Vegetables:

5 cups broccoli florets (steamed or blanched)
1 lb frozen spinach (thawed and drained)
3 cloves garlic (minced)
Condiments & Sauces:
1 cup ranch dressing (store-bought or homemade)

Dairy:

1 cup shredded cheddar cheese
1 cup shredded mozzarella cheese

Optional Add-Ins:

Red pepper flakes for heat
Fresh herbs like parsley or chives
Extra garlic powder or onion powder for a flavor boost

Step 1: Preheat the Oven

Preheat your oven to 375°F (190°C).

Step 2: Prepare the Veggies

If using frozen spinach, thaw and squeeze out all excess moisture.
Steam the broccoli until tender but still slightly crisp, about 3–4 minutes in the microwave or stovetop.
Sauté minced garlic in a skillet over medium heat with a little olive oil until fragrant (about 1 minute). Add the spinach to remove any leftover moisture.

Step 3: Mix It All Together

In a large mixing bowl, combine:
Cooked chicken
Chopped bacon
Spinach
Broccoli
Ranch dressing
Half of the cheddar and mozzarella cheese
Mix until everything is well coated.

Step 4: Assemble the Casserole

Pour the mixture into a greased 9×13-inch casserole dish.
Top with the remaining cheddar and mozzarella cheese.

Step 5: Bake

Bake uncovered for 20–25 minutes, or until bubbly and golden brown on top.
If you like a browned top, broil for the last 2–3 minutes.

Step 6: Serve

Let cool slightly before serving.
Garnish with fresh parsley or chives if desired.
Serve warm and enjoy the cheesy, savory goodness!

Perfect for meal prep, weeknight dinners, or crowd-pleasing keto parties!

🔁 Variations
Want to switch things up? Try these tasty variations:

1. Buffalo Chicken Version
Swap ranch dressing for Buffalo sauce + a touch of cream cheese for a spicy kick.

2. Mushroom & Chicken Bake
Add sautéed mushrooms for an earthy, meaty flavor.

3. Cream Cheese Upgrade
Add 4 oz cream cheese to the filling for extra richness.

4. Extra Veggies
Add chopped zucchini, cauliflower rice, or bell peppers.

5. Spicy Jalapeño Twist
Mix in chopped jalapeños and a sprinkle of red pepper flakes.

6. Pesto Chicken Casserole
Swap ranch for basil pesto for a Mediterranean flavor profile.

🧊 Storage and Reheating
Refrigeration:
Store leftovers in an airtight container in the fridge for up to 4 days.

Freezing:
Let the casserole cool completely.

Wrap tightly or store in a freezer-safe dish for up to 2 months.

Thaw overnight before reheating.

Reheating:
Reheat in the oven at 350°F for 15–20 minutes or microwave single portions for 1–2 minutes, until heated through.

Pro Tip: Add a splash of broth or cream before reheating to keep it creamy!

❓ 10 Frequently Asked Questions (FAQs)
1. Is this casserole keto-friendly?
Yes! It’s low in carbs, high in fat and protein, and perfect for keto or low-carb lifestyles.

2. Can I use rotisserie chicken?
Absolutely — it’s a huge time-saver.

3. Can I make this casserole ahead of time?
Yes! Assemble it up to 24 hours in advance, cover, and refrigerate. Bake just before serving.

4. What if I don’t like ranch?
Swap it for pesto, sour cream, Alfredo sauce, or garlic cream cheese.

5. Can I use fresh spinach instead of frozen?
Yes — just sauté 4–5 cups of fresh spinach until wilted and drain excess moisture.

6. Can I make this vegetarian?
Yes! Replace chicken and bacon with chickpeas, tofu, or more veggies.

7. What’s a good side dish?
Serve with a simple green salad, zucchini noodles, or cauliflower mash.

8. Is this kid-friendly?
Very! The cheesy texture and mild flavors are a hit with picky eaters.

9. Can I add pasta or rice?
If you’re not low-carb, yes! Stir in cooked pasta or rice before baking.

10. What cheese melts best for casseroles?
Cheddar for flavor, mozzarella for melt — the combo is perfect!

✅ Conclusion
This Easy Low Carb Chicken Casserole is your new weeknight warrior: cheesy, filling, flavor-packed, and secretly low in carbs. 🧀🍗🥦

It’s a one-dish wonder full of good-for-you ingredients like broccoli and spinach, while still delivering on comfort food feels. Whether you’re keto, low-carb, or just looking for a delicious make-ahead meal, this casserole checks every box.

More low-carb dinner winners:

Creamy Garlic Parmesan Chicken

Keto Taco Casserole

Zucchini Lasagna

Grab your casserole dish — this one’s going into the weekly rotation!

Easy Low Carb Chicken Casserole – Cheesy, Protein-Packed & Keto-Friendly