Chicken Broccoli Greek Yogurt Casserole

Chicken And Broccoli Casserole With Greek Yogurt is a creamy, comforting dinner that brings together tender chicken, broccoli, and a bubbling cheddar topping in one reliable baked casserole that works beautifully for busy weeknights.

This is the kind of main dish that feels practical and cozy at the same time. You get a full pan of creamy chicken casserole with a familiar broccoli-cheddar flavor, but the Greek yogurt gives the sauce a lighter, tangy edge that keeps it from feeling too heavy.

It also comes together in a very approachable way. The filling is made on the stovetop first, so the sauce thickens properly before it ever hits the oven, which helps the casserole bake up smooth and satisfying instead of watery.

Another reason this one works so well is the balance. The chicken makes it hearty, the broccoli adds color and bite, and the cheddar melts into the top for that golden finish everyone looks for in a baked dinner. It is simple food, but it lands exactly where you want it to.

Ingredients

Chicken — Cubed chicken forms the hearty base and makes this casserole filling enough to stand on its own as dinner.

Broccoli — Well-drained broccoli adds color, texture, and that classic pairing with cheddar that makes the whole dish feel familiar and comforting.

Greek yogurt — Plain Greek yogurt gives the sauce a creamy body with a gentle tang that brightens the richer ingredients.

Milk — Milk loosens the sauce and helps create that smooth, spoonable texture you want throughout the casserole.

Onion — A finely diced onion builds flavor right from the start and gives the filling a savory backbone.

Flour — Just enough flour thickens the sauce so the casserole slices and serves more cleanly after baking.

Mayonnaise — A small amount rounds out the yogurt and makes the filling feel extra creamy without overwhelming the dish.

Sharp cheddar cheese — Cheddar melts into the filling and also creates that golden, bubbling top layer that makes the casserole so inviting.

Cajun seasoning, garlic powder, salt, and black pepper — These simple seasonings keep the flavor warm and savory, with just a light kick from the Cajun blend.

Cooking Steps

STEP 1: Start by heating your oven and preparing a 9×13-inch baking dish with a light coating of nonstick spray. That small prep step makes serving much easier later, especially once the cheese on top has melted and bubbled.

STEP 2: In a large saucepan over medium heat, cook the diced onion until soft and translucent. Add the chicken and stir often until it is fully cooked through. This creates the savory base of the casserole and gives the onions time to mellow into the sauce.

STEP 3: Sprinkle the flour and seasonings over the cooked chicken mixture. Stir for a couple of minutes so the flour cooks in and coats everything evenly. This helps remove any raw flour taste and sets up the creamy texture of the finished filling.

STEP 4: Pour in the milk gradually while stirring so the mixture stays smooth. Let it come to a gentle boil, then simmer until it thickens into a creamy sauce that clings lightly to the chicken. You want it thick enough to hold the casserole together, but not so tight that it feels dry.

STEP 5: Fold in the drained broccoli, Greek yogurt, mayonnaise, and part of the cheddar. Stir just until the mixture looks creamy and evenly combined. At this stage, the filling should look rich and well blended, with the broccoli distributed throughout instead of sitting in clumps.

STEP 6: Spoon the mixture into the prepared baking dish and spread it into an even layer. Scatter the remaining cheddar over the top so it melts into a golden crust as the casserole bakes.

STEP 7: Bake until the casserole is hot all the way through and the cheese is melted, bubbling, and lightly golden. Let it rest for a few minutes before serving so the sauce settles a little and each scoop holds together better on the plate.

Perfect Pairings

A scoop of white rice works especially well here because it catches all of that creamy sauce and turns the casserole into an even more filling dinner. It is a great option when you want something simple and familiar on the side.

Riced cauliflower is a nice match when you want something lighter but still useful for soaking up the extra sauce. Its mild flavor keeps the focus on the chicken, broccoli, and cheddar.

A crisp green salad also balances this dish nicely. Since the casserole is rich and warm, something cool and fresh on the side makes the whole meal feel more complete without adding extra work.

Can I assemble this casserole ahead of time?

Yes, you can prepare the filling, spread it in the baking dish, and refrigerate it before baking. Add the top layer of cheese right before it goes into the oven for the best melted finish.

Can I use fresh broccoli instead of frozen?

Absolutely. Fresh broccoli works very well as long as it is lightly cooked first. Steam or blanch it just until tender-crisp, then drain it well so it does not water down the sauce.

Will full-fat Greek yogurt work too?

Yes, full-fat Greek yogurt works beautifully and will give the casserole an even richer finish. The main thing is to stir it in once the sauce has thickened so it blends in smoothly.

How do I know the casserole is done?

Look for a hot, bubbly center and melted cheddar with a lightly golden top. If the edges are gently bubbling and the middle looks creamy rather than loose, it is ready to come out.

Helpful Tips

• Drain the broccoli very well before adding it to the filling so the sauce stays creamy instead of thinning out in the oven.
• Add the milk gradually and stir as you go to keep the sauce smooth and prevent lumps from forming.
• Let the casserole rest for several minutes after baking so it sets up slightly and serves more neatly.

Keeping Leftovers Fresh

Store leftovers in an airtight container in the refrigerator for up to 3 days. The sauce stays creamy quite well, and the flavor often tastes even better the next day after everything has had time to settle together.

To reheat, warm individual portions in the microwave until heated through, or cover the baking dish and reheat it in the oven at a moderate temperature until the center is hot again. If it seems a little thicker after chilling, a small splash of milk can help loosen the sauce.

You can also freeze it, though the texture of the sauce may soften a bit after thawing because of the dairy. For the best result, cool the casserole completely, wrap it well, and freeze for up to 2 months. Thaw in the refrigerator before reheating, then warm it gently so the sauce stays as smooth as possible.