Separately, in a small bowl, whisk together the mushroom soup and milk. This creamy mixture will act as your binder and flavor-enhancer, infusing the entire dish with depth and silkiness.
3. Assemble the Layers of Flavor
In a greased heat-resistant baking dish (preferably glass or ceramic), start layering the ingredients:
First layer: Cubed potatoes
Second layer: Ham and chopped onions
Third layer: Drizzle the prepared mushroom soup mixture evenly over the top
Final touch: Sprinkle the remaining cheddar cheese generously on top
The layering process is essential to ensure that each component is infused with flavor during baking.
4. Bake to Golden Perfection
Preheat your oven to 180°C (356°F).
Place the casserole in the middle rack and bake for 2 hours uncovered, allowing the top to develop a delicious golden crust while the inside stays creamy and rich.
