Dinner Recipes

Creamy Turkey and Broccoli Casserole with Parmesan

By Clara ·
November 1, 2026

The first thing I check when I pull this casserole from the oven is the edge of the dish: it should be bubbling under a crisp, golden Parmesan topping. That contrast is what makes creamy turkey and broccoli casserole feel like more than a way to use up cooked turkey. The rice catches the sauce, and each scoop has a little crunch from the panko on top.

I make the sauce separately before it meets the rice, turkey, and broccoli. That gives me a chance to cook the flour briefly, then whisk in the broth and milk until the sauce thickens enough to coat a spoon. Sour cream goes in after the pan comes off the heat, so the sauce stays smooth and tangy rather than taking on a grainy texture. It’s a straightforward, hearty casserole with a crisp top and a creamy center.

Why This Casserole Needs Cooked Rice, Not Dry Rice

The rice goes into the dish already cooked because the oven time is for heating the casserole through, bubbling the sauce, and browning the topping. Dry rice needs more liquid and much longer to cook than this bake provides. Add it uncooked and you’re likely to end up with firm grains and a sauce that has disappeared before the rice is tender.

Cooked rice also gives the casserole its texture. The grains hold their shape while picking up the creamy sauce, so you get a cohesive scoop rather than a loose broth around the turkey and broccoli. White rice keeps the flavor mild and lets the Parmesan topping stand out. If your rice is clumped from the refrigerator, break it apart before combining everything; that makes it easier to coat the grains evenly without overworking the mixture.

This is a good use for rice you’ve already cooked, as long as it’s been stored safely and is still in good condition. The sauce is made separately, so the rice doesn’t need to absorb liquid on the stovetop before it goes into the baking dish.

What Gives the Sauce Its Creamy Body and the Topping Its Crunch

• Butter and flour — Together, they give the sauce a sturdy base. Cook the flour in the melted butter before adding liquid so the finished sauce doesn’t taste floury. All-purpose flour is the dependable choice here; a gluten-free option is covered below.
• Chicken broth, whole milk, and sour cream — Broth brings savory depth, milk softens it, and sour cream adds a gentle tang. Whole milk gives the sauce more body than a thinner milk would. Sour cream also contributes to the finished texture, so it’s not just a garnish or a flavor accent.
• Cooked turkey — Chopped cooked white turkey makes this a practical casserole for leftovers and gives each serving substantial bites. The turkey doesn’t need to be freshly cooked, but use pieces small enough to mix through the rice and broccoli.
• Frozen broccoli florets — Frozen florets are convenient and come in pieces that mix easily into the casserole. Choose florets rather than a bag heavy with stems if you want broccoli in most bites.
• Parmesan and panko — Parmesan adds a salty, savory edge, while panko makes a lighter, crispier lid than fine breadcrumbs. A wedge of Parmesan grated at home has a fresher, fuller flavor, but packaged grated Parmesan works when convenience matters.
• Garlic powder and onion powder — Both season the sauce without adding pieces that interrupt its smooth texture. They distribute evenly with the salt and pepper, which is useful in a casserole where the sauce needs to season the rice and turkey as well as itself.

Building the Cream Sauce Before It Meets the Rice

Cook the flour in the butter

Heat the oven to 375°F and grease a 9×13-inch baking dish. In a 3-quart saucepan, melt the butter over medium heat, then whisk in the flour and cook for 1 minute. Keep the whisk moving so the flour blends into the butter instead of catching on the bottom. This short cook gives the sauce its base without letting the flour brown.

Whisk in the broth and milk gradually

Pour in the chicken broth and milk a little at a time, whisking as you go to keep the mixture smooth. Bring it to a gentle simmer, then cook for 4–6 minutes, whisking often. The sauce is ready when it thickens enough to coat the back of a spoon. If it still runs off immediately, give it a little more time while continuing to whisk.

Season the sauce off the heat

Take the saucepan off the heat before whisking in the sour cream, garlic powder, onion powder, salt, and black pepper. Stir until the sour cream disappears into the sauce and there are no visible streaks. Keeping the pan off the burner helps the sour cream blend in smoothly. The sauce should look creamy and uniform before it goes into the bowl.

Coat the rice, turkey, and broccoli evenly

Combine the cooked rice, chopped turkey, and broccoli in a large bowl. Pour the sauce over the mixture and stir until the ingredients are evenly coated, checking the bottom of the bowl for any sauce pooling there. Transfer everything to the prepared baking dish and spread it into an even layer. An even layer helps the center heat through at the same pace as the edges.

Bake under foil, then brown the topping

Stir together the Parmesan, panko, and olive oil, then scatter the mixture evenly over the casserole. Cover the dish loosely with foil and bake for 25 minutes. Uncover and bake for 10–20 minutes, until the center reaches 165°F, the edges are bubbling, and the topping is golden brown. Let the casserole rest for 10 minutes before serving so each scoop holds together better.

Three Practical Swaps for Turkey and Broccoli Casserole

Questions That Come Up When Making This Casserole

Creamy Turkey and Broccoli Casserole with Parmesan

Creamy turkey and broccoli casserole combines cooked rice, chopped turkey, and broccoli in a thickened sauce, then bakes under a golden Parmesan-panko topping. The casserole rests for 10 minutes before serving, making it easier to scoop.

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Prep Time 15 minutes mins

Cook Time 52 minutes mins

Resting 10 minutes mins

Total Time 1 hour hr 17 minutes mins

Servings: 8 servings

Course: Dinner

Cuisine: American

Calories: 460

Ingredients Equipment Method Notes

Ingredients

  

For the casserole

• 4 tbsp butter unsalted
• 0.25 cup all-purpose flour
• 2 cup chicken broth
• 1 cup whole milk
• 0.5 cup sour cream
• 1 tsp garlic powder
• 0.5 tsp onion powder
• 0.5 tsp salt kosher
• 0.25 tsp black pepper
• 3 cup white rice cooked
• 3 cup turkey cooked, chopped
• 1 bag (12 oz) broccoli florets frozen, thawed and well drained

For the topping

• 1 cup Parmesan cheese grated
• 1 cup panko breadcrumbs
• 3 tbsp olive oil

Equipment

• 1 9x13-inch baking dish
• 1 3-quart saucepan

Method

 

Make the creamy casserole

1. Heat the oven to 375°F.
2. Grease a 9x13-inch baking dish.
3. Melt the butter in a 3-quart saucepan over medium heat.
4. Whisk in the flour and cook for 1 minute.
5. Gradually whisk in the chicken broth and milk.
6. Bring the mixture to a gentle simmer.
7. Cook for 4–6 minutes, whisking often, until the sauce thickens enough to coat the back of a spoon.
8. Remove the saucepan from the heat.
9. Whisk in the sour cream, garlic powder, onion powder, salt, and pepper.
10. Combine the rice, turkey, and broccoli in a large bowl.
11. Pour the sauce over the rice mixture and stir until evenly coated.
12. Transfer the mixture to the prepared baking dish.

Add the topping and bake

1. Stir together the Parmesan, panko, and olive oil.
2. Sprinkle the mixture evenly over the casserole.
3. Cover the dish loosely with foil and bake for 25 minutes.
4. Uncover and bake for 10–20 minutes, until the center reaches 165°F, the edges are bubbling, and the topping is golden brown.
5. Let the casserole rest for 10 minutes before serving.

Notes

Drain the broccoli well so excess moisture does not thin the casserole. Refrigerate leftovers for 3–4 days; freeze for up to 3 months. For a gluten-free version, use gluten-free flour and panko.