Chicken Poppy Seed Casserole skips the canned soup and uses a quick homemade cheese sauce, tender chicken, rice, and broccoli, all topped with a buttery crunchy topping.
Preheat oven to 350°F. Rinse rice in a fine-mesh sieve under cold water for 2–3 minutes or until water runs clear. Set aside. Bring a large pot of water to boil. Generously salt the water. (I add 1 teaspoon salt to every 4 cups water.) Once boiling, add bite-size chopped broccoli and boil for 3 minutes. Using a slotted spoon, pull out the broccoli and set it aside to completely dry. (I put it on paper towels.)
Return the water to a full boil, then add the rinsed rice. Cook, stirring occasionally, for exactly 5 minutes (do not reduce temperature). Taste to ensure rice is tender; if not, cook 1 more minute. Drain rice in a fine-mesh sieve. Pour rice in an even layer on the bottom of a 9x13-inch casserole dish. Add broccoli on top once it’s completely dried. (Wet broccoli will water down the sauce.)
Chop the chicken to get 3 cups. Add right on top of broccoli and rice.
Sauce: Melt butter in a small pot over medium heat. Once melted, gradually add in flour while whisking constantly to form a thick paste. Whisk for 1 minute, then gradually add 1/2 cup of the milk, continuing to whisk constantly. Gradually add 1/2 cup chicken stock while whisking constantly. Add another 1/2 cup milk, then the remaining 1/2 cup stock, and the remaining 1/2 cup milk. Whisk until completely smooth. Add 1 and 1/2 cups of cheese and whisk until completely smooth. Add sour cream and whisk until smooth. Stir in the chicken bouillon powder, Dijon mustard, garlic powder, onion powder, dried parsley, and salt and pepper to taste. (I add 3/4 teaspoon salt and 1/2 teaspoon pepper.) Stir in the poppy seeds.
Pour the sauce over everything and spread to evenly coat. Sprinkle the remaining 1/2 cup cheese over the sauce. In a saucepan over medium-high heat, melt the remaining 2 tablespoons butter. Add the panko and toast it, stirring constantly, until it’s light brown. Sprinkle the topping evenly over the cheese. Cover the casserole with foil and bake for 30 minutes, or until bubbly around the edges. Remove and serve hot.
Notes
Note 1: I use 1% milk for a lighter sauce. Use 2% or whole milk for extra creaminess. Avoid skim or plant-based milk.Note 2: Dijon adds tang, but you can reduce or skip it if you’re not a fan.Note 3: Crushed Ritz® also works. Panko is crunchier than regular breadcrumbs and usually found near the breadcrumb or Asian section.Storage: Keep leftovers in an airtight container in the fridge for up to 3 days. Reheat at 350°F or microwave in short bursts. Freeze up to 2 months; thaw in the fridge before reheating.