I’ve been making this for over 3 years, and it never disappoints. Friends always ask me for this recipe after trying it at dinner parties, and today I’m finally sharing my version of Chicken Cordon Bleu Casserole — all the glorious flavours of the classic rolled dish, baked into a single, satisfying tray that feeds a crowd without the fuss.

Recipe Overview

• Prep Time: 25 minutes
• Cook Time: 40 minutes
• Total Time: 1 hour 5 minutes
• Servings: 8 generous portions
• Difficulty: Moderate (worth every step)

Why You’ll Love This Chicken Cordon Bleu Casserole

• All the classic French-inspired flavours without the fiddly rolling and toothpicking — everything bakes together in one dish.
• The sauce turns gloriously golden and bubbly, coating every piece of chicken and pasta in a rich, cheesy blanket.
• It travels beautifully for potlucks and makes-ahead brilliantly for busy weeknights when you need a proper meal, like Italian Beef Sausage & Peppers Skillet or Buffalo Chicken Stuffed Peppers.kirarecipes.com/bbq-chicken-stuffed-sweet-potatoes/”>Bbq Chicken Stuffed Sweet Potatoes .kirarecipes.com/garlic-parmesan-chicken-meatballs/”>Garlic Parmesan Chicken Meatballs .kirarecipes.com/green-bean-and-ground-beef-stir-fry-over-rice/”>Green Bean And Ground Beef Stir-Fry Over Rice .kirarecipes.com/pepper-steak-stir-fry-over-rice/”>Pepper Steak Stir-Fry Over Rice .kirarecipes.com/smothered-chicken-in-creamy-gravy/”>Smothered Chicken In Creamy Gravy .kirarecipes.com/grilled-garlic-butter-steak-bites/”>Grilled Garlic Butter Steak Bites , or a comforting Hamburger Steak With Onion Gravy.kirarecipes.com/italian-beef-sausage-peppers-skillet/”>Italian Beef Sausage & Peppers Skillet .kirarecipes.com/bbq-chicken-stuffed-sweet-potatoes/”>Bbq Chicken Stuffed Sweet Potatoes.kirarecipes.com/garlic-parmesan-chicken-meatballs/”>Garlic Parmesan Chicken Meatballs.kirarecipes.com/green-bean-and-ground-beef-stir-fry-over-rice/”>Green Bean And Ground Beef Stir-Fry Over Rice.kirarecipes.com/pepper-steak-stir-fry-over-rice/”>Pepper Steak Stir-Fry Over Rice.kirarecipes.com/smothered-chicken-in-creamy-gravy/”>Smothered Chicken In Creamy Gravy .kirarecipes.com/grilled-garlic-butter-steak-bites/”>Grilled Garlic Butter Steak Bites.kirarecipes.com/easy-30-minute-homemade-sloppy-joes/”>Easy 30-Minute Homemade Sloppy Joes.
• Each serving delivers tender chicken, savoury ham, and that signature melty Swiss cheese in every forkful.
• Leftovers taste even better the next day as the flavours settle and deepen overnight in the fridge.

Chicken Cordon Bleu Casserole

15 min prep  ·  30 min cook  ·  4 servings

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Ingredients You’ll Need

• 800g boneless, skinless chicken breasts, cut into bite-sized chunks
• 300g cooked chicken or turkey ham, diced into small cubes
• 250g Swiss cheese, grated (Emmental or Gruyère work beautifully)
• 100g Parmesan cheese, finely grated
• 400ml double cream
• 200ml chicken stock (good quality, low salt)
• 2 tablespoons Dijon mustard
• 3 cloves garlic, minced
• 1 large onion, finely chopped
• 300g dried pasta shells or fusilli
• 60g unsalted butter
• 50g plain flour
• 1 teaspoon paprika
• Salt and freshly ground black pepper to taste
• Fresh parsley, chopped, for garnish

Tip: Grate your cheese from a block rather than using pre-packaged grated cheese — it melts more smoothly and gives a silkier sauce.

How to Make Chicken Cordon Bleu Casserole

1. Preheat your oven to 190°C (170°C fan) and bring a large pot of salted water to a rolling boil. You’ll hear the water roaring and see steam rising steadily — that’s your cue it’s ready. Cook the pasta for 2 minutes less than the packet suggests, as it will finish cooking in the oven. Drain and toss with a drizzle of olive oil to stop it clumping together.
2. While the pasta cooks, season the chicken chunks generously with salt, pepper, and paprika. In a large frying pan over medium-high heat, melt half the butter until it sizzles and foams — you’ll hear that gentle hiss and see the butter turn a pale golden colour. Add the chicken in a single layer, not overcrowding the pan. Cook for 5-6 minutes, turning occasionally, until the pieces are golden brown on all sides and feel firm to the touch. Transfer to a plate — you’ll see a lovely caramelised crust on the chicken.
3. In the same pan, add the remaining butter and the chopped onion. Stir and let it cook over medium heat for about 4 minutes until the onions turn translucent and release a sweet, fragrant aroma. Add the minced garlic and cook for another 30 seconds until you can smell that unmistakable garlicky warmth.
4. Sprinkle the flour over the onion mixture and stir continuously for 1 minute. You’ll see it form a thick paste that pulls away from the sides of the pan — this is your roux. The raw flour smell will disappear, replaced by a nutty, toasty scent. Slowly pour in the chicken stock while whisking vigorously to prevent lumps, then add the double cream in a steady stream. The sauce will start to thicken after about 3 minutes of gentle bubbling — look for it coating the back of a spoon thickly.
5. Stir in the Dijon mustard, half the grated Swiss cheese, and half the Parmesan. Keep stirring until the cheese has completely melted and the sauce is smooth and glossy, with a pale golden colour. Taste and adjust seasoning — the sauce should be rich and savoury with a gentle mustard warmth.
6. Combine the cooked pasta, browned chicken, and diced ham in a large mixing bowl. Pour the cheese sauce over everything and fold gently until every piece is coated — you’ll see the sauce clinging to each shape and the colours of chicken, ham, and pasta coming together evenly.
7. Transfer the mixture into a 9×13 inch baking dish and spread it into an even layer. Sprinkle the remaining Swiss cheese and Parmesan over the top, creating a thick, even blanket. The dish will look full and inviting, with the sauce peeking through the cheese topping.
8. Bake uncovered for 25-30 minutes. After 20 minutes, check the surface — you’re looking for a deep golden brown crust with bubbling edges. The cheese should be melted completely, with darker spots forming on the peaks. Let it rest for 10 minutes on the counter before serving — you’ll see the sauce settle and become creamier as it cools slightly. Garnish with fresh parsley just before bringing it to the table.

Tips From My Kitchen

• Use full-fat dairy for the best texture: Double cream and full-fat cheese create a sauce that stays velvety and doesn’t split during baking. Low-fat alternatives tend to become grainy and watery, which ruins the luxurious mouthfeel of this casserole.
• Don’t skip browning the chicken: That golden crust isn’t just for looks — it adds a deep, savoury flavour to the whole dish through the Maillard reaction. If you add raw chicken directly to the casserole, you’ll miss that rich, roasted note that makes this dish so satisfying.
• Cook pasta al dente (or slightly under): Pasta continues to absorb liquid and soften in the oven, so starting with fully cooked pasta will leave you with mushy results. By undercooking it by 2 minutes, the pasta stays pleasantly firm and holds its shape against the creamy sauce.
• Let the casserole rest before serving: This 10-minute rest allows the sauce to thicken and cling to every piece of chicken and pasta rather than pooling at the bottom of the dish. You’ll notice the difference immediately — a rested casserole holds together beautifully when spooned out.
• Grate your own cheese from a block: Pre-grated cheeses are coated in anti-caking agents like potato starch or cellulose, which prevent smooth melting. Freshly grated cheese dissolves into the sauce seamlessly, giving you that silky, stretchy texture that makes this dish so memorable.
• Season in layers: Season the chicken before browning, add salt to the sauce, and check the final mixture before baking. Building flavour step by step ensures every bite is well-seasoned rather than relying on a heavy hand at the end.

Equipment You’ll Need

• 9×13 inch baking dish (ceramic or glass works best)
• Aluminium foil (for covering if the top browns too quickly)
• Mixing bowls (one large for combining, one medium for cheese)
• Sharp knife for cutting chicken and ham into even pieces
• Large frying pan or skillet for browning the chicken
• Large pot for boiling pasta
• Whisk for making the sauce without lumps
• Grater for fresh cheese
• Wooden spoon or silicone spatula for folding

Common Mistakes to Avoid

• Overcrowding the pan: When browning chicken, too many pieces in the pan at once lowers the temperature and causes the meat to steam rather than sear. Work in batches if needed — you want that golden crust, not pale, rubbery chicken. You’ll know you’ve done it right when each piece has a deep brown colour and a slightly crisp edge.
• Wrong temperature: Baking at too high a temperature will cause the cheese to burn before the centre is hot, while too low a temperature leaves you with a pale, watery casserole. Stick to 190°C (170°C fan) and check after 25 minutes — the top should be golden and the edges bubbling gently.
• Skipping the rest time: Cutting into the casserole straight from the oven sends the sauce running across the plate like a flood. That 10-minute rest allows the starches in the pasta and the cheese to set slightly, giving you neat, tidy servings that hold their shape. Patience here makes all the difference between a soupy mess and a beautiful dinner.

Delicious Variations to Try

• Spicy Version: Add 1 teaspoon of smoked paprika and ½ teaspoon of cayenne pepper to the sauce, plus a finely chopped red chilli when you cook the onions. The heat cuts through the richness beautifully and adds a lovely warmth that lingers on the palate.
• Vegetarian/Vegan Option: Replace the chicken with 400g of roasted cauliflower florets and use a plant-based ham alternative made from seitan or tofu. Swap the double cream for full-fat coconut cream and use a good vegan melting cheese — the sauce will still be rich and satisfying.
• Different Protein: Diced turkey breast works wonderfully in place of chicken, especially around the holidays when you might have leftovers. You can also use thick slices of roasted chicken from a rotisserie bird — just shred it roughly and fold it into the sauce.

What to Serve With Chicken Cordon Bleu Casserole

• A crisp green salad with a sharp vinaigrette to cut through the richness
• Steamed green beans or tenderstem broccoli with a squeeze of lemon
• Buttered peas with fresh mint
• Roasted asparagus spears drizzled with olive oil
• A light Fresh Tomato And Avocado Salad for a bright, fresh contrast

Frequently Asked Questions

Chicken Cordon Bleu Casserole

A creamy, cheesy casserole that combines tender chicken, ham, and pasta in a rich Swiss and Parmesan sauce, baked until golden and bubbling.

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Pin Recipe

Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Servings: 4 servings

Course: Main Course

Cuisine: American

Calories: 850

Ingredients
Method
Notes

Ingredients

  

• 800 g boneless skinless chicken breasts, cut into bite-sized chunks
• 300 g cooked chicken or turkey ham diced into small cubes
• 250 g Swiss cheese grated (Emmental or Gruyère work beautifully)
• 100 g Parmesan cheese finely grated
• 400 ml double cream
• 200 ml chicken stock good quality, low salt
• 2 tablespoons Dijon mustard
• 3 cloves garlic minced
• 1 large onion finely chopped
• 300 g dried pasta shells or fusilli
• 60 g unsalted butter
• 50 g plain flour
• 1 teaspoon paprika
• Salt and freshly ground black pepper to taste
• Fresh parsley chopped, for garnish

Method

 

1. Preheat your oven to 190°C (170°C fan) and bring a large pot of salted water to a rolling boil. You’ll hear the water roaring and see steam rising steadily — that’s your cue it’s ready. Cook the pasta for 2 minutes less than the packet suggests, as it will finish cooking in the oven. Drain and toss with a drizzle of olive oil to stop it clumping together.
2. While the pasta cooks, season the chicken chunks generously with salt, pepper, and paprika. In a large frying pan over medium-high heat, melt half the butter until it sizzles and foams — you’ll hear that gentle hiss and see the butter turn a pale golden colour. Add the chicken in a single layer, not overcrowding the pan. Cook for 5-6 minutes, turning occasionally, until the pieces are golden brown on all sides and feel firm to the touch. Transfer to a plate — you’ll see a lovely caramelised crust on the chicken.
3. In the same pan, add the remaining butter and the chopped onion. Stir and let it cook over medium heat for about 4 minutes until the onions turn translucent and release a sweet, fragrant aroma. Add the minced garlic and cook for another 30 seconds until you can smell that unmistakable garlicky warmth.
4. Sprinkle the flour over the onion mixture and stir continuously for 1 minute. You’ll see it form a thick paste that pulls away from the sides of the pan — this is your roux. The raw flour smell will disappear, replaced by a nutty, toasty scent. Slowly pour in the chicken stock while whisking vigorously to prevent lumps, then add the double cream in a steady stream. The sauce will start to thicken after about 3 minutes of gentle bubbling — look for it coating the back of a spoon thickly.
5. Stir in the Dijon mustard, half the grated Swiss cheese, and half the Parmesan. Keep stirring until the cheese has completely melted and the sauce is smooth and glossy, with a pale golden colour. Taste and adjust seasoning — the sauce should be rich and savoury with a gentle mustard warmth.
6. Combine the cooked pasta, browned chicken, and diced ham in a large mixing bowl. Pour the cheese sauce over everything and fold gently until every piece is coated — you’ll see the sauce clinging to each shape and the colours of chicken, ham, and pasta coming together evenly.
7. Transfer the mixture into a 9×13 inch baking dish and spread it into an even layer. Sprinkle the remaining Swiss cheese and Parmesan over the top, creating a thick, even blanket. The dish will look full and inviting, with the sauce peeking through the cheese topping.
8. Bake uncovered for 25-30 minutes. After 20 minutes, check the surface — you’re looking for a deep golden brown crust with bubbling edges. The cheese should be melted completely, with darker spots forming on the peaks. Let it rest for 10 minutes on the counter before serving — you’ll see the sauce settle and become creamier as it cools slightly. Garnish with fresh parsley just before bringing it to the table.

Notes

Cook the pasta 2 minutes less than package directions, as it will finish cooking in the oven. Let the casserole rest for 10 minutes before serving for a creamier texture.

I hope this Chicken Cordon Bleu Casserole becomes a staple in your kitchen the way it has in mine. If you give it a try, I’d love to hear how it turned out — drop a comment below and let me know what you served alongside it, or if you tried one of the variations. And if you’re looking for another hearty, make-ahead meal, do check out my Hearty Breakfast Burrito Recipe for those mornings when you want something substantial. Happy cooking, friends!

Chicken Cordon Bleu Casserole

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