All White Dinner Dress: A Creamy Chicken Recipe

An all white dinner dress is a playful name for a creamy chicken-and-rice casserole made with white rice, chicken, mushrooms, and a pale, savory sauce. Baked until bubbling and served hot, it is a simple family-style dinner; versions vary, and this one uses cooked chicken to keep the oven time manageable.

Ingredients

2 cups (370 g) long-grain white rice
3 cups (710 ml) low-sodium chicken broth
1 tablespoon (15 ml) olive oil
1 pound (450 g) boneless, skinless chicken breasts, cut into ¾-inch (2 cm) pieces
1 teaspoon fine salt, divided
½ teaspoon ground black pepper, divided
8 ounces (225 g) white button mushrooms, sliced
1 medium yellow onion, finely diced, about 1 cup (150 g)
2 tablespoons (28 g) unsalted butter
2 tablespoons (16 g) all-purpose flour
1½ cups (355 ml) whole milk, warmed
½ cup (120 ml) heavy cream
½ teaspoon garlic powder
¼ teaspoon dried thyme
1 cup (100 g) shredded low-moisture mozzarella
½ cup (50 g) finely grated Parmesan
2 tablespoons (8 g) chopped parsley, optional

Instructions

Heat the oven to 375°F (190°C). Rinse the rice in a fine-mesh sieve under cool water until the runoff is mostly clear; drain well. Grease a 9-by-13-inch (23-by-33-cm) baking dish lightly.
Bring the chicken broth to a boil in a medium saucepan. Stir in the rice, cover, and reduce the heat to low. Simmer until the rice is tender and the liquid is absorbed, about 15 minutes, or follow the package timing if it differs. Remove from the heat and leave covered for 5 minutes, then fluff with a fork.
While the rice cooks, heat the olive oil in a large skillet over medium-high heat. Season the chicken with half the salt and pepper. Cook, stirring occasionally, until browned and cooked through, about 6–8 minutes, depending on the size of the pieces. Check the thickest pieces with a food thermometer: the USDA FSIS safe minimum temperature for poultry is 165°F (74°C). Transfer the chicken to a plate.
Lower the skillet heat to medium. Add the mushrooms and onion and cook, stirring, until the mushrooms release their moisture and soften and the onion is translucent, about 6 minutes. If the pan becomes dry before the vegetables soften, add 1 tablespoon (15 ml) of water.
Add the butter to the skillet. When melted, stir in the flour and cook for 1 minute, stirring so it does not brown. Gradually whisk in the warm milk, then the cream. Add the remaining salt and pepper, garlic powder, and thyme. Simmer gently, whisking, for 3–5 minutes, until the sauce coats a spoon. Do not let it boil hard.
Stir the cooked chicken and any plate juices into the sauce. Fold in the cooked rice, mozzarella, and half of the Parmesan until evenly combined. Spoon the mixture into the prepared dish and level the top. Sprinkle with the remaining Parmesan.
Bake uncovered for 20–25 minutes, until hot throughout and bubbling at the edges. If you want a more golden top, broil briefly, watching closely so the cheese does not burn. Rest for 5 minutes before serving, then scatter with parsley if desired.

Tips

Use broth with a salt level you like. If your broth is salted, start with less added salt and taste the sauce before mixing it with the rice.
Warm the milk before adding it to the roux. This helps the sauce become smooth; whisk continuously as you pour to avoid lumps.
Cooked leftover chicken works well: use 3 cups (about 400 g) diced chicken and stir it into the finished sauce. Since it is already cooked, skip the skillet chicken step, but bake the assembled casserole until hot throughout.
For easier cleanup, mix the rice and sauce in a large bowl before transferring them to the baking dish. Avoid adding extra uncooked rice, which would need additional liquid and baking time.

Serving Suggestions

Serve this rich casserole with a crisp green salad dressed with lemon vinaigrette, or pair it with steamed green beans, peas, or roasted cauliflower. A simple side with acidity and crunch balances the creamy sauce. Offer black pepper and extra Parmesan at the table, and serve portions straight from the baking dish while the rice is hot.

Variations

For a meat-free version, omit the chicken and use vegetable broth; increase the mushrooms to 12 ounces (340 g), or add 1 cup (150 g) frozen peas near the end of cooking the sauce. The result is still creamy, with a more pronounced vegetable flavor.

Swap the mozzarella for an equal quantity of Swiss or mild white cheddar. Either melts well, though cheddar makes the flavor sharper and Swiss brings a nuttier note. For a lighter sauce, use 2% milk instead of whole milk and omit the cream; the casserole will be less rich and the sauce slightly thinner.

Storage and Reheating

Refrigerate leftovers within 2 hours of cooking in a shallow, airtight container. Keep them refrigerated at 40°F (4°C) or colder and use within 3–4 days. For longer storage, freeze portions in airtight freezer-safe containers for up to 2 months; thaw overnight in the refrigerator for more even reheating.

Reheat individual portions covered in the microwave, stirring once if possible, until steaming hot throughout. For a larger amount, cover the baking dish with foil and heat in a 350°F (175°C) oven. Add a splash of broth or milk if the rice looks dry. Reheat leftovers to 165°F (74°C), checking the center with a food thermometer. Reheat only the portion you plan to eat.

Frequently Asked Questions

Can I assemble the casserole ahead?
Yes. Cook the rice and chicken, make the sauce, and combine everything in the baking dish. Cover and refrigerate promptly, for up to 24 hours. Bake directly from the refrigerator, allowing extra time, and check that the center reaches 165°F (74°C). If the top browns before the middle is hot, cover loosely with foil.

Can I use brown rice?
Yes, but cook it separately according to its package directions before adding it to the sauce. Brown rice takes longer to cook and typically needs a different amount of liquid, so do not use the white-rice simmering time or broth amount as a direct substitute.

Why is my casserole dry?
Rice can absorb more sauce as it rests, especially if it was cooked beyond tender or the casserole was baked too long. Measure the rice and liquid, keep the dish covered during storage, and stir a little broth or milk into portions when reheating.

Can I make it without mushrooms?
Yes. Leave them out and use an extra cup of diced onion, or replace them with sliced zucchini. Zucchini releases water, so cook it until that moisture evaporates before making the sauce.

How do I know the casserole is ready?
The edges should bubble and the center should be hot. Since the chicken is fully cooked before baking, check the casserole’s center rather than relying only on its color; for safe reheating, it should reach 165°F (74°C).

Can I use rotisserie chicken?
Yes. Remove the skin and bones, then measure about 3 cups (400 g) shredded meat. Stir it into the sauce and proceed with the recipe. Rotisserie chicken can be salty, so reduce the added salt and taste before assembling.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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