This Keto Chicken Cordon Bleu casserole is classic comfort food—creamy, cheesy, and satisfying. It combines tender chicken and savory ham in a rich sauce, then finishes with melted Swiss for the perfect low-carb family meal.
Ready in under an hour, this casserole is simple to assemble and a reliable crowd-pleaser. I used a mix of white and dark meat from a boiled whole chicken, roughly chopped, but shredded chicken or rotisserie chicken work equally well and save time. Pair the chicken with your favorite cooked ham—just check labels if you prefer uncured or minimally processed options. Once combined and covered with a creamy, flavorful sauce, the casserole is topped with Swiss cheese and baked until bubbly and golden. This is one I make often because everyone loves it.
Chicken and ham: tips and options
The chicken-and-ham combination is what makes cordon bleu so delicious. Use all white meat, all dark meat, or a mix—whichever your family prefers. Shredded chicken creates a different texture than chopped; both are tasty. For convenience, rotisserie chicken is a great shortcut. For the ham, choose any cooked variety you enjoy; uncured hams are often preferred for a cleaner ingredient list.
Sauce and cheese: what to use
The sauce is rich and tangy. Start with a base of keto mayonnaise and sour cream, then stir in Dijon mustard for depth (yellow or spicy brown mustard can be substituted). A pinch of nutmeg gives the sauce a subtle warmth that elevates the flavor. Finish with garlic powder, onion powder, salt, and pepper. Swiss cheese is traditional and melts beautifully over the top; provolone makes a fine substitute if you prefer.
Serving suggestions
This casserole pairs well with many low-carb sides. A crisp green salad is always a good start—Caesar or wedge-style salads complement the richness. Consider a DIY salad bar with chopped iceberg or romaine and toppings like blue cheese crumbles, shredded cheese, diced tomatoes, crumbled bacon, hard-boiled eggs, sliced avocado, or olives. For a more comforting plate, serve with keto biscuits, chaffles, low-carb cornbread alternatives, or keto English muffins. Roasted or sautéed vegetables such as asparagus, broccoli, Brussels sprouts, cauliflower, green beans, or spinach make excellent accompaniments.
Roasted vegetable pairing ideas
Roasted vegetables are easy and flavorful alongside this casserole. Try whole roasted cauliflower, loaded roasted radishes, roasted asparagus with asiago and bacon, or roasted kohlrabi for low-carb sides that complement the dish.
Helpful hints
• Rotisserie chicken is a quick and convenient option for this casserole.
• Provolone slices can replace Swiss if you prefer a milder cheese.
Main kitchen equipment and utensils
- 13×9 inch baking dish
- Measuring cups
- Measuring spoons
Encouragement
“Most assuredly, I say to you, he who hears My word and believes in Him who sent Me has everlasting life, and shall not come into judgment, but has passed from death into life.” John 5:24
Keto Chicken Cordon Bleu Casserole
8 Servings
15 minutes
35 minutes
50 minutes
This casserole brings together tender chicken, savory ham, and a creamy Dijon-mustard sauce, finished with melted Swiss cheese for a comforting low-carb dinner.
Ingredients
- Avocado oil spray
- 5 cups cooked, chopped chicken
- 2 cups cooked, chopped ham
- 1 cup keto mayonnaise
- ½ cup sour cream
- 1 tablespoon Dijon mustard
- ½ teaspoon nutmeg
- ¼ teaspoon garlic powder
- ¼ teaspoon onion powder
- ¼ teaspoon salt
- ¼ teaspoon pepper
- 8 slices Swiss cheese
Instructions
- Preheat oven to 350°F (175°C). Spray a 13×9-inch baking dish with avocado oil spray.
- Place the chopped chicken in the prepared dish and top with the chopped ham.
- In a medium bowl, combine mayonnaise, sour cream, Dijon mustard, nutmeg, garlic powder, onion powder, salt, and pepper. Stir until smooth.
- Spread the sauce evenly over the chicken and ham.
- Arrange Swiss cheese slices over the top. Bake 35–40 minutes, until heated through and bubbling.
- If desired, broil 2–3 minutes to brown the cheese—watch closely to avoid burning.
Nutrition Information:
Yield: 8
Serving Size: 1
Amount Per Serving:
Calories: 570
Total Fat: 47g
Saturated Fat: 14g
Trans Fat: 0g
Unsaturated Fat: 29g
Cholesterol: 144mg
Sodium: 791mg
Carbohydrates: 1g
Net Carbohydrates: 1g
Fiber: 0g
Sugar: 1g
Protein: 40g
Nutrition information is provided as an estimate and may vary by ingredients and brands used. Net carbs reflect subtraction of fiber and certain sugar alcohols where applicable.
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