Cheesy Chicken and Rice Casserole (No Canned Soup!)

Some dinners are just pure comfort, and a bubbling, golden cheesy chicken and rice casserole is right at the top of that list. It’s creamy, cheesy, filling, and loaded with tender chicken, fluffy rice, and colorful vegetables. It’s the kind of meal that has everyone going back for seconds.

But this isn’t the old-school version made with cans of condensed soup. Instead, it’s built on a quick homemade cheddar cheese sauce that comes together in about 5 minutes. It tastes richer, creamier, and so much fresher. And you know exactly what’s in it.

The secret to making it weeknight-friendly is using cooked chicken and cooked rice. Leftovers, rotisserie chicken, or microwave rice packets all work perfectly. Add a bag of frozen vegetables, straight from the freezer, and dinner is on the table in about 40 minutes with very little hands-on work.

It’s kid-friendly, meal-prep friendly, and freezer-friendly. In other words, it’s the casserole every busy family needs.

If you’re looking for more easy chicken and rice dinners, my Smothered Chicken and Rice is another cozy family favorite.

Why You’ll Love This Casserole

• No canned soup. It uses a simple homemade cheese sauce instead.
• Minimal prep. Cooked chicken, cooked rice, and frozen veggies make it fast.
• Ready in 40 minutes. Most of that time is hands-off baking.
• A complete meal. It has protein, grains, and vegetables all in one dish.
• Kid-approved. Cheese, chicken, and rice? Picky eaters love it.
• Great for leftovers. Use up leftover chicken and rice from earlier in the week.
• Make-ahead and freezer-friendly. Assemble ahead or freeze portions for later.
• Easily gluten-free. Just swap the flour.

Why a Homemade Cheese Sauce Is Worth It

Classic chicken and rice casseroles usually rely on canned cream-of-chicken or cream-of-mushroom soup. They’re convenient, but they’re often high in sodium and preservatives, and they can taste a little flat.

This recipe uses a simple homemade cheese sauce instead. It’s based on a classic béchamel, which is just butter, flour, and milk, with cheddar melted in. It only takes about 5 minutes, and the result is a silky, flavorful sauce that coats every grain of rice.

Here’s how it works:

1. Make a roux. Butter and flour are cooked together for a minute. This creates a paste that will thicken the sauce.
2. Add the milk slowly. Whisking in the milk a little at a time keeps the sauce smooth and lump-free.
3. Simmer and season. As the sauce simmers, the flour thickens it. Then the seasonings and cheese go in.

The mustard trick: A teaspoon of Dijon or dry mustard might sound unusual, but it’s a classic secret in cheese sauces. You won’t taste mustard. It just makes the cheddar taste cheesier and sharper.

Ingredients You’ll Need

For the cheese sauce

• Butter (¼ cup / ½ stick / 57 g)
• All-purpose flour (⅓ cup / 42 g): Use a 1:1 gluten-free flour blend for a gluten-free version.
• Milk (2½ cups / 600 ml): 2% is ideal, but any milk works.
• Garlic powder (1 teaspoon)
• Fine salt (1 teaspoon)
• Dijon mustard or dry mustard (1 teaspoon)
• Onion powder (½ teaspoon)
• Paprika (¼ teaspoon)
• Black pepper (¼ teaspoon)
• Shredded cheddar cheese (8 oz / 225 g, about 2½ cups), divided

For the casserole

• Cooked chicken breast (3 cups / about 420 g, shredded or cubed)
• Cooked rice (3–3½ cups / about 500–580 g): Brown or white.
• Frozen mixed vegetables (1 bag, 12–16 oz / 340–450 g): A “California blend” of broccoli, cauliflower, and carrots is perfect.

Ingredient Tips

Chicken: Any cooked chicken works. Use leftover roast chicken, shredded rotisserie chicken, slow cooker or Instant Pot chicken, or baked chicken breasts or thighs. Need to cook some fresh? My Air Fryer Chicken Breast is quick and stays juicy.

Rice: Use any cooked rice you have, such as white, brown, or jasmine. For a shortcut, use two 8–9 oz (250 g) packets of microwave rice.

Vegetables: Use any frozen vegetable blend, or a single vegetable like broccoli or peas. Add them straight from frozen; no need to thaw. Fresh vegetables work too. Chop them small so they cook through.

Cheese: For the smoothest sauce, shred your own cheese from a block. Pre-shredded cheese is coated in anti-caking agents that stop it melting smoothly, and that can make your sauce grainy. Sharp cheddar gives the boldest flavor.

How to Make Cheesy Chicken and Rice Casserole

Step 1: Prep the oven and dish

Preheat your oven to 375°F (190°C), or 170°C fan. Lightly spray a 9×13-inch (23×33 cm) baking dish with cooking spray.

Step 2: Make the roux

In a medium saucepan, melt the butter over medium-high heat. Whisk in the flour and cook for about 1 minute, whisking constantly. This cooks out the raw flour taste.

Step 3: Add the milk

Turn the heat down to medium-low. Pour in the milk 1 cup at a time, whisking well after each addition until smooth. Adding it gradually is the key to a lump-free sauce.

Step 4: Season and thicken

Whisk in the garlic powder, salt, mustard, onion powder, paprika, and black pepper. Turn the heat back up and bring the sauce to a gentle simmer. Cook for 1–2 minutes, stirring constantly, until it thickens enough to coat the back of a spoon. Take it off the heat.

Step 5: Melt in the cheese

Add 1½ cups (about 135 g) of the shredded cheddar and stir until completely melted and smooth. Save the remaining 1 cup for the topping.

Tip: Always add cheese off the heat. If the sauce is too hot, the cheese can separate and turn grainy.

Step 6: Combine everything

Pour the cheese sauce into the prepared baking dish. Add the cooked rice, chicken, and frozen vegetables, and stir until everything is evenly coated.

Step 7: Bake covered

Cover the dish tightly with foil and bake for 20 minutes. The foil traps steam, which heats the frozen vegetables through and keeps the rice from drying out.

Step 8: Add the cheesy topping

Take off the foil and give the casserole a stir. Sprinkle the remaining 1 cup of cheese evenly over the top. Bake uncovered for another 5 minutes, until the cheese is melted and bubbly.

Want a golden, browned top? Switch the oven to broil for the last 1–2 minutes, watching closely so it doesn’t burn.

Step 9: Rest and serve

Let the casserole stand for 5 minutes before serving. This lets the sauce thicken slightly, so it holds together when you scoop it.

Using Raw Chicken Instead

Don’t have cooked chicken? You can use raw chicken breast cut into bite-sized cubes. Mix it in with the rice and vegetables as directed, then bake covered for 40 minutes instead of 20, before uncovering and adding the cheese. Always check that the chicken is cooked through to 165°F (74°C).

Troubleshooting

My cheese sauce is lumpy. The milk was probably added too quickly. Next time, add it gradually and whisk after each addition. To rescue a lumpy sauce, whisk vigorously or blend it briefly with an immersion blender.

My cheese sauce is grainy or oily. The sauce was likely too hot when the cheese went in, or you used pre-shredded cheese. Take the pan off the heat before adding cheese, and shred your own from a block.

My casserole is dry. The rice may have absorbed too much sauce, which happens especially with leftover rice that’s already quite dry. Stir in a splash of milk before baking, and keep the dish tightly covered.

My casserole is too runny. Let it rest for 5–10 minutes after baking. It thickens as it cools. Frozen vegetables can release water too, so make sure your bag doesn’t have lots of ice crystals.

Easy Variations

• Broccoli cheddar version: Use all broccoli instead of mixed vegetables for a classic chicken broccoli rice casserole.
• Different cheese: Mix cheddar with mozzarella for extra stretch, pepper jack for a little heat, or Parmesan for a nutty flavor.
• Add a crunchy topping: Sprinkle buttered breadcrumbs or crushed crackers over the cheese before the final bake.
• Creole or Cajun twist: Swap the paprika for a little Creole or Cajun seasoning.
• Add bacon: Stir in crumbled cooked bacon for a smoky, salty boost.
• Mushroom version: Add sautéed mushrooms to the sauce. If you love that combo, try my Keto Garlic Mushroom Chicken Casserole.
• Turkey version: Use leftover cooked turkey instead of chicken. It’s great after the holidays.
• Dairy-free: Use dairy-free butter, unsweetened plant milk, and dairy-free cheese.

Make It Gluten-Free

This recipe is easy to make gluten-free. Just replace the all-purpose flour in the cheese sauce with a 1:1 gluten-free all-purpose flour blend. The sauce thickens the same way, with no difference in taste or texture. Double-check your other ingredients (like mustard and spices) for hidden gluten.

What to Serve with Chicken and Rice Casserole

This casserole is a complete meal on its own, but a simple side makes it even better:

• Green vegetables: Roasted green beans, steamed broccoli, or my quick Garlic Sautéed Spinach with Onions.
• Roasted carrots with a drizzle of honey.
• A crisp green salad to balance the richness.
• Cornbread muffins or warm biscuits.
• Garlic bread for a heartier meal.

Make Ahead, Storage, and Reheating

Make ahead: Assemble the casserole in the baking dish, cover it tightly, and refrigerate for up to 2 days. When ready, bake as directed, adding about 10 extra minutes to the covered baking time since it’s starting cold.

Refrigerator: Let leftovers cool, then store them in airtight containers in the fridge for up to 4 days. This makes it great for meal prep lunches.

Reheating:

• Microwave: Heat individual portions for 1–2 minutes, stirring halfway. Add a splash of milk if it looks dry.
• Oven: Cover the dish with foil and reheat at 350°F (175°C) for 15–20 minutes, until hot all the way through.

Freezer: Let the casserole cool completely, then divide it into freezer-safe containers. Freeze for up to 3 months. Thaw overnight in the fridge, then reheat as above.

Frequently Asked Questions

Can I use uncooked rice?
This recipe is designed for cooked rice. Uncooked rice needs much more liquid and a much longer baking time, so it’s likely to stay crunchy.

Can I use raw chicken?
Yes. Cut raw chicken into small cubes and bake covered for 40 minutes instead of 20. Make sure it reaches 165°F (74°C).

Do I have to thaw the frozen vegetables?
No. Add them straight from the freezer. They’ll cook through while the casserole bakes covered.

Can I use rotisserie chicken?
Absolutely. Shredded rotisserie chicken is one of the easiest shortcuts and adds great flavor.

Can I make this without mustard?
Yes, you can leave it out. It just boosts the cheese flavor, so the sauce will taste a little milder without it.

What size dish do I need?
A 9×13-inch (23×33 cm) baking dish. You can also split it between two 8×8-inch dishes, bake one, and freeze the other.

How many people does it feed?
About 8 servings of roughly 1½ cups each.

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