This creamy Keto Broccoli Chicken Casserole is everything you want on a chilly weeknight: rich, silky sauce, tender chicken, and just-tender broccoli wrapped in gooey cheddar on top. The texture is luxurious without being heavy — the cream cheese and heavy cream create a velvety backbone while the broccoli adds a bright snap and the chicken keeps it satisfying. It’s an easy one-dish meal that feels comforting and impressive, yet comes together with pantry-friendly ingredients. Serve it with a simple green salad or spoon it over cauliflower rice for extra bulk and you’ve got a low-carb dinner that will disappear fast. For another creamy weeknight casserole idea, I like this take on a similar dish like a creamy low-carb broccoli chicken casserole when I want a shortcut.
Why You’ll Love This Creamy Keto Broccoli Chicken Casserole
- Ultra-creamy sauce from cream cheese and heavy cream that coats every bite.
- High in protein and low in carbs — ideal for keto or low-carb meal plans.
- Simple pantry ingredients and minimal prep make it a true weeknight winner.
- Broccoli provides a fresh, slightly crisp contrast to the silky sauce and melty cheddar.
- Easily customizable — keep the base the same and vary seasonings or cheese.
- Makes great leftover lunches that reheat beautifully.
- One-baking-dish comfort food without complicated techniques.
What Is Creamy Keto Broccoli Chicken Casserole?
This casserole is a baked, one-dish meal combining cooked shredded chicken and lightly steamed broccoli in a rich cream-based sauce, finished under a blanket of shredded cheddar. The texture is creamy and cheesy with tender chunks of chicken and broccoli that hold their shape. It’s a baked method (375°F in a 9×13 dish) that develops a bubbling, slightly golden top — you can broil briefly for a golden finish. People often serve it as a cozy family dinner, low-carb meal prep, or an easy dish to bring to potlucks (just keep it warm). Overall, it’s classic comfort food with a modern keto-friendly twist.
Ingredients for Creamy Keto Broccoli Chicken Casserole
For the Base
- 2 cups shredded cooked chicken
- 3 cups broccoli florets
For the Sauce
- 4 oz cream cheese
- 1/2 cup heavy cream
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1 tablespoon butter
For the Topping
- 1 cup shredded cheddar cheese
Ingredient Notes (Substitutions, Healthy Swaps)
- Dairy alternatives: For a lower-fat option, use reduced-fat cream cheese and light cream — note, texture will be less rich and slightly thinner. You can also use a full-fat Greek yogurt swap (optional) if you whisk it in off-heat to avoid curdling, but this changes the texture slightly.
- Gluten-free: This recipe is naturally gluten-free as written — no changes needed.
- Protein swaps: If you don’t have chicken, leftover roast turkey works beautifully while keeping the dish keto-friendly.
- Budget substitutions: Use rotisserie chicken or canned chicken (drain well) to save time and money.
- Cheese options: Swap cheddar for Monterrey Jack or a mild Colby for a different flavor profile; if using a very strong cheese, reduce salt slightly.
- Lower-sodium tip: Reduce the added salt to 1/4 teaspoon and use low-sodium cheese to control overall sodium.
Step-by-Step Instructions
Step 1 – Preheat and prepare the dish
Preheat the oven to 375°F and lightly grease a 9×13 baking dish.
Visual cue: The baking dish should be evenly coated with butter or nonstick spray so the casserole won’t stick.
Step 2 – Steam the broccoli
Steam the broccoli florets until just tender, about 3–5 minutes, then drain thoroughly.
Pro cue: Stop steaming while the florets still have a bit of snap — overcooked broccoli becomes mushy in the bake.
Step 3 – Make the creamy sauce
In a saucepan over medium-low heat, melt butter and stir in cream cheese and heavy cream. Whisk in garlic powder, onion powder, salt, and pepper until smooth.
Visual cue: The sauce should be glossy and pourable, with no lumps from the cream cheese; if it’s too thick, add a splash more cream.
Step 4 – Combine chicken and broccoli with sauce
In a large bowl, combine shredded chicken, drained broccoli, and creamy sauce; mix well.
Pro cue: Toss gently so the broccoli florets stay intact and the chicken gets evenly coated without breaking apart.
Step 5 – Assemble and bake
Transfer mixture to prepared baking dish, spreading evenly. Top with shredded cheddar. Bake for 20–25 minutes until bubbly and cheese is melted. Broil for 1–2 minutes for a golden top if desired.
Visual cue: The casserole should be bubbling around the edges and the cheese should be fully melted and beginning to brown.
Step 6 – Rest and serve
Let rest for 5–10 minutes before serving.
Pro cue: Resting helps the sauce thicken slightly so the casserole holds its shape when scooped.
Pro Tips for Success
- Use warm chicken: If the shredded chicken is chilled, let it come closer to room temperature to help the sauce soak in evenly.
- Drain broccoli well: Excess water from steaming will thin the sauce and can make the casserole watery.
- Low and slow for the sauce: Melt cream cheese on low heat and whisk constantly to prevent scorching or lumps.
- Taste before baking: The sauce can be adjusted for salt and pepper before it goes into the oven — cheeses vary in saltiness.
- Don’t skip the rest: A short rest period allows the casserole to set and makes it easier to portion.
- Even cheese layer: Spread shredded cheddar in an even layer so it melts uniformly and gives a consistent top crust.
- Watch the broiler: Browning happens quickly — check after 30–60 seconds to avoid burning.
Flavor Variations (OPTIONAL)
- Spicy (OPTIONAL): Add 1/4–1/2 teaspoon crushed red pepper flakes or a pinch of cayenne to the sauce for a gentle heat.
- Herbed (OPTIONAL): Stir in 1–2 teaspoons chopped fresh parsley or chives after baking for a fresh finish.
- Mushroom boost (OPTIONAL): Sauté 1 cup sliced mushrooms in the butter before adding the cream cheese and fold them into the casserole for earthiness.
- Extra cheesy (OPTIONAL): Mix half a cup of grated Parmesan with the cheddar topping for a nutty, golden crust.
- Lemon lift (OPTIONAL): Add 1/2 teaspoon lemon zest to the sauce for a subtle bright note that cuts through the richness.
- Protein swap (OPTIONAL): Substitute shredded turkey for the chicken while keeping all other ingredients the same.
Serving Suggestions
- Over cauliflower rice for an extra-low-carb plate that soaks up the sauce.
- With a crisp green salad (mixed greens, cucumber, and a light vinaigrette) to balance the richness.
- As a main at a casual dinner party served family-style with crusty low-carb bread for scooping.
- Portion into ramekins for individualized servings at brunch or a cozy weekend lunch.
- Pair with roasted Brussels sprouts or sautéed green beans for extra vegetables.
- Serve with pickled vegetables or a tart side (like quick-pickled onions) to add acidity.
In case you want a creamy, spiced one-pot dinner with a different texture, I often alternate this casserole with a pasta-free, saucy skillet such as a Cajun chicken alfredo one-pot for variety in weeknight rotations.
Make-Ahead, Storage & Reheating
- Make-ahead: You can assemble the casserole up to the point of baking (step 5) and refrigerate, covered, for up to 24 hours before baking. Add a few extra minutes to the baking time if cold from the fridge.
- Refrigerator storage: Store leftovers in an airtight container for 3–4 days.
- Reheating in the oven: Reheat at 350°F for about 15–20 minutes covered with foil until warmed through, then uncover and broil briefly if you want the top re-crisped.
- Reheating in the microwave: Microwave individual portions on medium power in 30–45 second bursts, stirring once, until hot — the texture will be softer and the cheese won’t re-crisp.
Storage and Freezing Instructions
- Freezing: This casserole freezes well. Cool completely, then transfer to a freezer-safe container (or wrap tightly with foil and plastic). Freeze for up to 3 months.
- Thawing: Thaw overnight in the refrigerator before reheating. Reheat in a 350°F oven until warmed through, about 25–30 minutes (more if still chilled).
- If you need to freeze single servings, use freezer-safe portion containers for easy lunches.
- Texture note: After freezing and reheating, the broccoli will be softer — if you prefer more texture, slightly undercook the broccoli before freezing.
Nutrition Facts (Per Serving)
| Calories | Protein | Carbs | Fat | Fiber | Sodium |
|———|——–|——|—–|——|——-|
| 318 kcal | 20 g | 5 g | 28 g | 1 g | 520 mg |
Nutrition values are estimates and may vary depending on ingredients and portion sizes.
FAQ About Creamy Keto Broccoli Chicken Casserole
Q: My sauce is grainy — what went wrong?
A: Likely the cream cheese wasn’t fully softened or the heat was too high. Melt cream cheese over medium-low heat and whisk until smooth; you can also cut it into small pieces to help it incorporate.Q: Can I use frozen broccoli?
A: Yes — thaw and drain well, or briefly microwave then squeeze out excess water before combining to prevent a watery bake.Q: How do I know the casserole is done?
A: It should be bubbling around the edges and the cheese fully melted. The internal temperature isn’t required for safety since the chicken is already cooked, but 165°F is a good target for reheated dishes.Q: Can I make this dairy-free?
A: Not without changing the core identity — the cream cheese, heavy cream, and cheddar are central. If you must, try dairy-free cream cheese and a plant-based cream plus dairy-free cheese, but texture and flavor will differ.Q: Will the chicken dry out if I bake it?
A: No — the sauce protects the chicken. Use cooked, moist shredded chicken for the best results; if it’s very lean, the sauce keeps it tender.Q: Can I halve the recipe for fewer servings?
A: Yes — halve the ingredient amounts and use a smaller baking dish; check baking time as it may be slightly shorter.
Notes
- Plating idea: Spoon into shallow bowls and top with a sprinkle of finely chopped fresh herbs for color.
- Small flavor upgrade: A pinch of smoked paprika (optional) added to the sauce can give a subtle smoky depth.
- Seasoning adjustments: Taste the sauce before baking since cheeses vary in salt; reduce added salt if your cheese is very salty.
- Presentation tip: Allow the casserole to sit 5–10 minutes before serving so it slices neatly and looks tidy on the plate.
- Leftover idea: Use chilled leftovers as a filling for lettuce wraps or warm them and serve over sautéed mushrooms for a low-carb twist.
Creamy Keto Broccoli Chicken Casserole
- Total Time: 45 minutes
- Yield: 4 servings
- Diet: Keto
Description
A creamy, comforting casserole with tender chicken and broccoli, topped with gooey cheddar cheese, perfect for a low-carb weeknight dinner.
Ingredients
- 2 cups shredded cooked chicken
- 3 cups broccoli florets
- 4 oz cream cheese
- 1/2 cup heavy cream
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1 tablespoon butter
- 1 cup shredded cheddar cheese
Instructions
- Preheat the oven to 375°F and lightly grease a 9×13 baking dish.
- Steam the broccoli florets until just tender, about 3–5 minutes, then drain thoroughly.
- In a saucepan over medium-low heat, melt butter and stir in cream cheese and heavy cream. Whisk in garlic powder, onion powder, salt, and pepper until smooth.
- Combine shredded chicken, drained broccoli, and creamy sauce in a large bowl; mix well.
- Transfer the mixture to the prepared baking dish, spreading evenly. Top with shredded cheddar. Bake for 20–25 minutes until bubbly and cheese is melted.
- Let the casserole rest for 5–10 minutes before serving.
Notes
This dish can be prepped ahead and baked later. Leftovers reheat well and can be stored for up to 4 days.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Main Course
- Method: Baking
- Cuisine: American