This oven baked 3-ingredient chicken cordon bleu casserole is the kind of comforting, company-worthy supper that feels a little special without taking much effort at all. It captures those classic chicken cordon bleu flavors of tender chicken, savory ham, and melty Swiss cheese in an easy family-style bake, and it has that cozy vintage casserole charm that makes it perfect for busy weeknights, potlucks, or a simple Sunday dinner.
Serve this rich casserole with a crisp green salad, steamed broccoli, buttered green beans, or roasted asparagus to balance out the creamy, cheesy bite. For something a little heartier, spoon it over rice, egg noodles, or mashed potatoes, and set out warm dinner rolls so nobody leaves any of that delicious sauce behind.
Oven Baked 3-Ingredient Chicken Cordon Bleu Casserole
Servings: 6
Ingredients
4 cups cooked chicken, chopped or shredded
2 cups diced ham
8 ounces Swiss cheese, sliced or shredded
Directions
1. Preheat your oven to 350°F and lightly grease a medium baking dish or 9x13-inch casserole dish.
2. Spread the cooked chicken evenly in the prepared baking dish, then scatter the diced ham over the top.
3. Arrange the Swiss cheese over the top so it covers the casserole as evenly as possible.
4. Bake for 25 to 30 minutes, or until the cheese is fully melted and the casserole is hot and bubbly around the edges.
5. Let the casserole rest for 5 minutes before serving, then spoon onto plates and enjoy while warm.
Variations & Tips
Add a creamy layer: If you want a more old-fashioned casserole texture, stir in a can of condensed cream of chicken soup before baking. It stretches the dish a bit and gives you a creamier spoonful that many kids really enjoy.
Kid-friendly version: If Swiss cheese is a little strong for picky eaters, try using provolone or mozzarella instead. You still get that gooey baked finish, but the flavor stays mild and familiar.
Use leftovers wisely: This is a wonderful recipe for leftover rotisserie chicken or holiday ham. Just make sure both are bite-size so every scoop gets a little bit of everything.
Make it a full meal: You can layer the casserole over cooked rice or egg noodles if you need to stretch it for a larger family dinner. That turns it into a more filling one-dish meal without much extra work.
Don’t overbake: Since the chicken and ham are already cooked, the goal is simply to heat everything through and melt the cheese. Pull it from the oven as soon as it’s bubbling so the meat stays tender.