
Preheat your oven to 190°C (375°F). Lightly grease a baking dish with oil or butter.
In a large bowl, combine the sour cream, eggs, salt, and pepper. Whisk until well combined.
Add the sliced potatoes and chicken pieces to the sour cream mixture. If using, add sliced onion and mushrooms as well.
Gently mix everything together in the bowl, ensuring the chicken and potatoes are coated in the creamy mixture.
Pour the mixture evenly into the prepared baking dish.
If using, sprinkle the grated cheese evenly over the top.
Bake for 45-55 minutes, or until the potatoes are tender, the chicken is cooked through, and the top is golden and bubbly.
Let it rest for 5-10 minutes before serving. This allows the casserole to set slightly.
💡 Royal Baking Tips:
- 🔥 For an extra crispy top layer, pop your casserole under the broiler for the last minute or two (keep a close eye on it, royalty doesn't burn their dinner!).
- 🌿 Feeling fancy? A sprinkle of fresh chives or parsley right before serving adds a burst of colour and flavour! ✨
- 🧀 If you didn't go for the cheese option, you could also add a swirl of pesto or a dollop of crème fraîche on top for extra richness! 😋


