Tender Chicken Fillet Casserole with Creamy Egg Topping
This casserole layers juicy chicken fillet with sliced potatoes, onions and garlic, then crowns the dish with a silky egg‑sour‑cream topping and melted mozzarella. A bright, tangy sauce made with sour cream, mustard, ketchup and pickled cucumber adds the perfect finishing touch.
Instructions
9 steps-
Prepare the chicken
Preheat the oven to a moderate temperature (the video does not specify). Toss the chicken fillet with olive oil, a little butter, salt, dried garlic, sweet paprika and black pepper. Spread on a baking sheet and roast until lightly browned and nearly cooked through. -
Add aromatics
While the chicken roasts, slice the onion and mince the garlic cloves. Scatter them over the chicken and continue roasting until the onion softens. -
Prepare the potatoes
Slice the potatoes into uniform pieces, season with a pinch of salt and a little black pepper, then arrange them in an even layer on top of the chicken and onions. -
Form the casserole layers
Combine the chicken, onions, garlic and potatoes into a single baking dish, ensuring the ingredients are evenly distributed. -
Make the creamy topping
In a bowl, whisk together the sour cream and the two eggs until smooth. Pour the mixture over the layered casserole, spreading it evenly. -
Add mozzarella
Sprinkle the shredded mozzarella cheese over the top of the creamy layer. -
Bake the casserole
Return the dish to the oven and bake until the topping sets, the mozzarella melts and turns golden brown, and the potatoes are tender. -
Prepare the tangy sauce
Mix the remaining sour cream, whole grain mustard, ketchup, chopped pickled cucumber and green onions in a small bowl until well combined. -
Serve
Cut the casserole into portions, drizzle or spoon the tangy sauce over each serving, and enjoy while hot.
Tips
For extra crispness, broil the casserole for a minute or two at the end to deepen the mozzarella crust. Adjust the amount of pickled cucumber in the sauce to suit your taste for tanginess.
Video
“This chicken is driving the whole internet crazy! An incredibly delicious dinner for the family!” by Chic-Chic-Chic | Chicken, Sides & Salad, watch on YouTube.
About this recipe
The dish combines tender chicken with a buttery‑olive oil roast, creating a savory base that stays moist throughout baking. The potatoes become soft and golden, while the creamy egg topping adds richness without heaviness, and the mozzarella forms a stretchy, bubbly crust.
Serve the casserole hot, spooning the signature tangy sauce over each portion. It pairs well with a simple green salad or steamed vegetables for a complete, comforting family dinner.
