Step by step

Method

4 steps

1. 1

   Heat the oven to 375°F and grease a 9×13-inch baking dish. In a bowl, mix 1 can (10.5 oz) cream of chicken soup, ½ cup sour cream, 1 tablespoon Dijon mustard, ½ teaspoon garlic powder, and a pinch of salt and pepper until smooth — no sour-cream lumps.

2. 2

   Spread half the sauce in the bottom of the dish. Layer on 3 cups cooked chopped chicken, then 8 oz chopped sliced ham, then 8 oz Swiss cheese (shredded or torn slices). Pour the remaining sauce over the top and nudge it into the corners so nothing sticks out dry.

3. 3

   Toss 1 cup panko with 2 tablespoons melted butter until the crumbs look evenly damp. Sprinkle in an even blanket over the casserole — this is your crisp "breading" layer.

4. 4

   Bake 30–35 minutes until the edges are bubbling and the panko is deep golden brown. If the top is pale at 30 minutes, broil 1–2 minutes watching closely. Rest 5–10 minutes so it scoops cleaner. You want creamy chicken-ham layers under a golden crunchy top — not a soggy pale crust or a dry underbaked middle.