Chicken Kiev Casserole

My apartment smelled like a Kiev restaurant on a rainy Tuesday, and I have never looked at chicken the same way since. The garlic butter was melting into the cream sauce, and my neighbor actually knocked on the door to ask what I was cooking. That casserole turned a boring weeknight into something I craved for weeks afterward. It is the kind of dish that makes you close your eyes at the first bite.

I made this for my sister when she was going through a rough patch, and she went back for thirds without saying a word. We just sat on the couch with our plates and let the food do the comforting. That golden breadcrumb crust cracking under her fork was the only sound either of us needed to hear.

Ingredients

• 1.5 lbs boneless, skinless chicken breasts, cut into bite sized pieces: Cutting them small ensures every piece gets coated in that incredible garlic butter sauce.
• 6 tbsp unsalted butter, softened: You need it soft so the herbs blend through evenly without fighting it.
• 3 cloves garlic, minced: Fresh garlic only here, the jarred stuff will not give you the same punch.
• 2 tbsp fresh parsley, finely chopped: Flat leaf parsley holds up better in the butter than curly varieties.
• 1 tbsp fresh dill, finely chopped (optional): This is what gives it that true Kiev personality, so I highly recommend it.
• 1 tsp lemon juice: Just a squeeze to brighten all that richness and keep the butter from tasting flat.
• 1/2 tsp salt and 1/4 tsp ground black pepper: Season the butter mixture generously because the chicken needs it.
• 1 cup heavy cream or half and half: Heavy cream gives a thicker sauce, half and half keeps it a bit lighter.
• 1/2 cup low sodium chicken broth: Low sodium matters because the Parmesan and butter already bring plenty of salt.
• 1/4 cup grated Parmesan cheese: Grate it fresh for the best melt and the most savory depth.
• 1 cup panko breadcrumbs: Panko stays crunchier than regular breadcrumbs after baking in all that cream.
• 2 tbsp butter, melted: This coats the panko and creates that irresistible golden top.
• 1/2 tsp dried thyme or parsley: A little herb in the topping ties it to the butter mixture below.
• 1/2 cup shredded mozzarella (optional): Adds a gooey stretchy layer that kids especially love.
• Nonstick cooking spray or oil: Just enough to keep nothing sticking to your baking dish.

Instructions

Get the oven ready:

Preheat to 375 degrees and lightly grease your 9 by 13 inch baking dish so nothing sticks when you serve it up later.

Make the garlic herb butter:

Mash together the softened butter, minced garlic, parsley, dill, lemon juice, salt, and pepper until it looks like a vibrant green flecked compound butter. Taste it on your finger because that little bite should make you excited already.

Lay down the chicken:

Spread the chicken pieces evenly across the bottom of the dish in a single layer so everything cooks at the same rate.

Dot with butter:

Spoon generous dollops of the herb butter all over the chicken, pretending you are placing little flavor bombs everywhere.

Pour the liquids:

Slowly pour the heavy cream and chicken broth over the entire dish, then scatter the Parmesan across the top so it melts into the sauce as it bakes.

Add the mozzarella if using:

Sprinkle it on now for that stretchy, bubbly cheese layer that makes every scoop feel indulgent.

Build the crunch topping:

Toss the panko with melted butter and dried herbs in a small bowl, then scatter it evenly across the casserole for a crust that will crackle beautifully.

Bake until golden:

Slide it into the oven for 30 to 35 minutes until the top is deeply golden and the chicken is cooked through, and your kitchen smells absolutely incredible.

Let it rest:

Give it five minutes before serving so the sauce thickens slightly and everything holds together on the plate.

Save

The second time I made this, my roommate stood over the baking dish with a spoon before I could even plates. We laughed about it, but honestly I understood completely.

What to Serve Alongside

A simple green salad with a tangy vinaigrette cuts through the richness perfectly, and some crusty bread on the side is nonnegotiable for soaking up every drop of that garlic cream sauce. Steamed green beans or roasted asparagus also work beautifully if you want something warm on the plate.

Making It Ahead

You can assemble the entire casserole up to the breadcrumb step, cover it tightly, and refrigerate it for about 24 hours before baking. Just add five extra minutes to the bake time if it is going in cold from the fridge.

Storage and Reheating

Leftovers keep well in an airtight container in the fridge for up to three days, and honestly the flavors deepen overnight in a way that makes the second day almost better. The breadcrumb topping will soften, but a quick reheat in the oven at 350 degrees brings the crunch right back. Skip the microwave if you can help it because it turns the cream sauce grainy.

• Freeze individual portions wrapped tightly for up to two months.
• Thaw overnight in the fridge before reheating for the best texture.
• Always check that reheated chicken reaches 165 degrees internally before serving.

Save

This casserole is proof that comfort food does not need to be complicated, just generous with butter and baked until golden. Share it with someone who needs a warm plate and a quiet evening.

Common Questions

→ Can I use chicken thighs instead of chicken breasts?

Yes, boneless skinless chicken thighs work well and will stay even juicier. Cut them into similar bite-sized pieces and adjust cooking time by a few extra minutes if needed.

→ How do I store and reheat leftovers?

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in a 350°F oven for about 15 minutes to restore the crispy topping, or microwave individual portions for 1–2 minutes.

→ Can I assemble this casserole ahead of time?

Absolutely. Assemble the dish without the breadcrumb topping, cover tightly, and refrigerate for up to 24 hours. Add the panko topping just before baking and add 5–10 extra minutes to the baking time if going straight from the fridge.

→ What can I substitute for heavy cream?

Half-and-half works as a direct substitute. For a lighter version, use whole milk combined with an extra tablespoon of butter. Avoid plain low-fat milk, as the sauce won't thicken properly.

→ How do I know when the chicken is fully cooked?

The internal temperature of the largest chicken pieces should reach 165°F (74°C). Visually, the chicken should be opaque throughout with no pink centers, and the topping should be deep golden brown.

→ Can I freeze this casserole?

Yes, you can freeze it before or after baking. Wrap tightly in foil and freeze for up to 2 months. Thaw overnight in the refrigerator before baking or reheating. Note that the cream sauce may separate slightly upon thawing.