Name: Creamy One-Dish Chicken Rice Casserole Recipe
Prep time: 15 min
Cook time: 45 min
Total time: 60 min
Ingredients: 1 ½ lbs boneless skinless chicken thighs, cut into 1-inch pieces; 1 medium yellow onion, diced; 3 cloves garlic, minced; 1 ¼ cups long-grain white rice; 2 cups low-sodium chicken broth; ½ cup whole milk; ½ cup sour cream; ⅓ cup grated Parmesan cheese; 1 tsp dried thyme; ½ tsp smoked paprika; Salt and freshly ground black pepper; 1 cup frozen peas, thawed or rinsed under warm water; 1 tbsp olive oil

This creamy one-dish chicken rice casserole is the kind of meal that makes a weeknight feel a little cozier without adding extra dishes to the sink.

The rice cooks right in the same pan, soaking up savory broth and chicken juices while the top turns golden and bubbly in the oven.

What Makes This Chicken Rice Casserole So Good

I keep coming back to this version because it nails the texture I want: tender rice that still has a little bite, not mushy, with chicken that stays juicy.

No separate pot for rice, no stovetop babysitting. The oven does all the work while you set the table or just kick off your shoes.

Ingredients

1 ½ lbs boneless skinless chicken thighs, cut into 1-inch pieces: thighs stay juicy; breasts work if you prefer
1 medium yellow onion, diced
3 cloves garlic, minced
1 ¼ cups long-grain white rice: uncooked; don’t use instant or brown rice here
2 cups low-sodium chicken broth
½ cup whole milk
½ cup sour cream
⅓ cup grated Parmesan cheese
1 tsp dried thyme
½ tsp smoked paprika
Salt and freshly ground black pepper
1 cup frozen peas: thawed or rinsed under warm water
1 tbsp olive oil

Variations / Substitutions

Chicken breasts: dice into similar-sized pieces. They will be slightly less juicy but still work well.
Herb swap: fresh rosemary or oregano can replace the thyme. Use half the amount if fresh.
Dairy-free: swap the milk for unsweetened oat milk and the sour cream for a plant based alternative. The parmesan can be omitted or replaced with a dairy-free shred.
A little heat: a pinch of red pepper flakes stirred in with the thyme adds a gentle warmth.

If you like this, you’ll also want to try my Lemon Chicken Orzo Bake.

How to Make Creamy One-Dish Chicken Rice Casserole

Step 1: Brown the Chicken

Preheat your oven to 375°F (190°C). Heat the 1 tbsp olive oil in a large oven-safe skillet or Dutch oven over medium-high heat. Season the chicken pieces with a generous pinch of salt and several grinds of black pepper, then add them to the pan in a single layer. Cook without moving them for about 3 to 4 minutes, until the bottoms turn deeply golden, then give them a stir and let the other sides pick up some color, another 2 minutes.

The chicken won’t be cooked through yet, but you want those browned bits stuck to the pan. They’ll add a ton of flavor to the rice later. Transfer the chicken to a plate and set it aside.

Step 2: Sauté the Onion and Garlic

Lower the heat to medium and add the diced onion to the same pan. Cook it for about 4 minutes, stirring now and then, until the pieces soften and turn translucent. Stir in the minced garlic and let it sizzle for 30 seconds, just long enough to become fragrant.

If the pan looks dry, a tiny splash of broth loosens any browned bits without burning the garlic.

Step 3: Mix the Casserole

Pour in the 1 ¼ cups of rice and sprinkle the 1 tsp dried thyme and ½ tsp smoked paprika over everything. Stir constantly for 1 minute to lightly toast the rice. Then pour in the 2 cups chicken broth, ½ cup milk, and ½ cup sour cream. Add half of the grated Parmesan and stir until the sour cream melts into the liquid. Bring the whole thing to a gentle simmer.

The mixture will look pretty loose at this point, and that’s exactly what you want. The rice will drink up that liquid as it bakes. Nestle the browned chicken back into the pan, tucking the pieces down among the rice, and scatter the cup of peas in any bare spots.

Step 4: Bake It Slow

Cover the pan with a tight lid or a layer of foil. Slide it onto the middle rack of the oven and bake for 30 minutes.

When you peek, the rice should be almost tender with a little liquid still pooling in the valleys. If it still looks soupy, give it a few more minutes covered.

Step 5: Uncover, Broil, and Serve

Remove the lid or foil and sprinkle the remaining Parmesan over the top. Return the pan to the oven, uncovered, and bake another 10 to 15 minutes, until the cheese melts, the edges bubble, and the top turns a light golden brown. Let the casserole sit for 5 minutes straight out of the oven before you scoop into it.

The rest time lets the rice finish absorbing any lingering liquid and the whole dish settles into spoonfuls that stay together. Serve it hot, straight from the pan, and watch everyone go back for a little more of the crispy top.

A Few Notes Before You Start

Use the right rice.: Long-grain white rice is the only type that cooks through in this timing without turning gummy. Instant rice, parboiled rice, and brown rice all need different liquid ratios and cook times.
Don’t skip browning the chicken.: Those caramelized bits on the bottom of the pan season the whole casserole. If you rush this, the dish will taste flat.
Let it rest.: That 5-minute wait after baking isn’t just to save your tongue; it thickens the rice and makes the casserole sliceable instead of soupy.
Check the rice a few minutes early.: Ovens vary, and if your rice is tender at 25 minutes covered, move straight to the uncovered step. Overbaked rice turns mushy, so trust your fork.

Pan type changes bake time slightly. Here’s a rough guide:

Pan Type	Covered Time	Uncovered Time
Cast iron Dutch oven	30 minutes	10 to 12 minutes
Ceramic or glass baking dish	35 minutes	12 to 15 minutes

Storing and Reheating Leftovers

Refrigerate: Cool the casserole completely, then store it in an airtight container for up to 4 days.
Reheating: The microwave works in a pinch, but the oven brings back the crispy top best. Cover and warm at 325°F (165°C) until heated through, adding a tablespoon of broth if the rice looks dry.

What To Serve With Chicken Rice Casserole

A simple green salad with a lemony dressing cuts through the richness of the creamy rice and chicken. For a fast vegetable, roasted broccoli or steamed green beans cooked while the casserole bakes bring a fresh, crisp contrast to the soft textures on the plate.

Frequently Asked Questions

Can I use chicken breasts instead of thighs?

Yes, just dice them to the same size and watch the initial browning time. Breasts will be a little less juicy, but the casserole keeps them from drying out.

Can I make this ahead of time?

You can assemble the whole dish without baking it, cover, and refrigerate for up to 24 hours. When ready, bake as directed, adding about 10 minutes to the covered time.

Can I freeze this casserole?

Yes, the baked and cooled casserole freezes well in an airtight container for up to 2 months. Thaw overnight in the fridge and reheat in the oven. The rice texture softens slightly after freezing, but the flavor holds up.

Why did my rice turn out mushy?

It likely baked a few minutes too long or the pan was covered too tightly. Start checking tenderness 5 minutes before the timer goes off, and use a fork to fluff the rice before the rest time.