Retro Chicken à la King with Creamy Mushroom Sauce

Why You’ll Love This Recipe

• Classic, cozy comfort food with a creamy, velvety sauce that feels nostalgic and special.
• Flexible serving options: impressive over puff pastry, homey over biscuits, or simple over rice.
• Uses easy-to-find ingredients and comes together in under an hour.
• Great way to use up leftover chicken and vegetables while still tasting restaurant-worthy.

Grocery List

• Produce: Yellow onion, cremini or white mushrooms, green bell pepper, fresh parsley, lemon (optional, for brightness).
• Dairy: Unsalted butter, heavy cream (or half-and-half).
• Pantry: Olive oil, all-purpose flour, low-sodium chicken broth, dry sherry (optional), Worcestershire sauce (optional), kosher salt, black pepper, paprika, ground nutmeg.
• Frozen & Jarred: Frozen peas, jarred pimientos or roasted red peppers.
• Serving Base: Puff pastry shells, or buttermilk biscuits, or white rice (your choice).
• Protein: Boneless, skinless chicken breasts (or thighs).

Full Ingredients

For the Chicken and Sauce

• 1 1/2 lb boneless, skinless chicken breasts, cut into 1/2-inch cubes
• 1 tbsp olive oil
• 5 tbsp unsalted butter, divided
• 1 small yellow onion, finely diced (about 3/4 cup)
• 8 oz cremini or white button mushrooms, cleaned and sliced
• 1 small green bell pepper, diced (about 3/4 cup)
• 1/3 cup chopped jarred pimientos or roasted red pepper, well drained
• 1/4 cup all-purpose flour
• 2 cups low-sodium chicken broth, warmed
• 3/4 cup heavy cream (or half-and-half for a lighter version)
• 2 tbsp dry sherry (optional but traditional)
• 1 cup frozen peas (no need to thaw)
• 1 tsp kosher salt, plus more to taste
• 1/2 tsp freshly ground black pepper, plus more to taste
• 1 tsp sweet paprika
• Pinch ground nutmeg (about 1/8 tsp)
• 1/4 tsp dried thyme or 1 tsp fresh thyme leaves (optional)
• 1 tsp Worcestershire sauce (optional, for depth)
• 1–2 tsp fresh lemon juice (optional, to brighten at the end)

For Serving

• 6 puff pastry shells, baked according to package directions
• or 6 warm biscuits
• or 4 cups cooked white rice, fluffed
• 2–3 tbsp chopped fresh parsley, for garnish

Step-by-Step Instructions

Step 1: Prep your ingredients and start the base

Dice the chicken into bite-size 1/2-inch cubes, trimming any excess fat. Pat the pieces dry with paper towels so they brown nicely. Season lightly with a big pinch of salt and a few grinds of black pepper. Finely dice the onion, slice the mushrooms, and dice the green bell pepper. Chop the pimientos or roasted red pepper and set aside. Measure out the flour, broth, cream, and seasonings so they are ready when you need them.

If you plan to serve this over puff pastry shells or biscuits, preheat your oven now and bake them according to package or recipe instructions (most puff pastry shells bake at about 400°F / 200°C for 18–22 minutes). If using rice, start cooking it so it is ready by the time the sauce is finished. Warm the chicken broth in a small saucepan or in the microwave; warm broth blends into the roux more smoothly.

Step 2: Brown the chicken

In a large, wide skillet or sauté pan, heat the olive oil and 1 tbsp of the butter over medium-high heat. When the fat is hot and shimmering, add the chicken in a single layer. Avoid crowding; if your pan is small, brown in two batches. Cook for 5–7 minutes, stirring occasionally, until the chicken is just cooked through and has some light golden color on the outside. You are not trying to develop a deep crust, just light browning for flavor.

Transfer the cooked chicken and any juices to a clean bowl and set aside. Do not wipe out the pan; those browned bits on the bottom will add flavor to the sauce.

Step 3: Sauté the vegetables

Reduce the heat to medium. In the same pan, add 1 tbsp butter. When melted, add the diced onion, sliced mushrooms, and green bell pepper. Sprinkle with a pinch of salt. Cook, stirring occasionally, for 6–8 minutes, until the vegetables soften and the mushrooms release their moisture and start to take on some golden color.

Once the vegetables are tender and most of the liquid has cooked off, stir in the chopped pimientos or roasted red pepper. Cook for another 1–2 minutes to warm them through. This vegetable mixture forms the flavorful base of the chicken à la king.

Step 4: Make the roux

Add the remaining 3 tbsp butter to the pan with the vegetables. When the butter has fully melted and is bubbling, sprinkle the flour evenly over the mixture. Stir continuously, coating the vegetables in the flour-butter mixture. Cook this roux for 1–2 minutes, stirring, until it smells slightly nutty and no longer like raw flour. It should look thick and pasty, clinging to the vegetables.

Do not let the roux get too dark; you are aiming for a pale golden color so the finished sauce stays light and creamy. If it seems very dry, you can add another 1 tbsp butter, but it should still be thick.

Step 5: Build the creamy sauce

Slowly pour in the warm chicken broth while whisking or stirring constantly to avoid lumps. It helps to add the broth in 2–3 additions, stirring well between each one. The mixture will look quite thick at first, then loosen into a smooth sauce. Once the broth is incorporated, stir in the heavy cream (or half-and-half) and the dry sherry, if using.

Add the paprika, nutmeg, thyme (if using), Worcestershire sauce, and frozen peas. Bring the mixture to a gentle simmer over medium heat, stirring often. Simmer for 3–5 minutes, until the sauce has thickened to a velvety consistency that coats the back of a spoon. If it becomes too thick, you can thin it with a splash more broth or cream; if it seems too thin, continue simmering for a few more minutes.

Step 6: Finish with the chicken and adjust seasoning

Return the cooked chicken and any accumulated juices to the pan, stirring to coat the pieces in the sauce. Simmer gently for another 3–4 minutes, just until the chicken is heated through and the flavors meld. Avoid boiling vigorously, which can make the chicken tough.

Taste the sauce and adjust with additional salt and pepper as needed. If you like a brighter flavor, stir in 1–2 teaspoons of fresh lemon juice right at the end. The finished sauce should be rich, savory, and well seasoned, with a hint of sweetness from the bell pepper and pimientos.

Step 7: Serve over puff pastry, biscuits, or rice

If using puff pastry shells or biscuits, make sure they are baked and hot. Gently separate the tops of the pastry shells (if they have caps) and place one on each plate. Ladle a generous scoop of the chicken à la king over and into each shell, allowing some sauce to spill over the sides. If serving over rice, spoon 1 cup of hot cooked rice into each shallow bowl and top with the creamy chicken mixture.

Sprinkle each portion with chopped fresh parsley for color and freshness. Serve immediately while hot and creamy. This dish is at its best right after cooking, when the sauce is silky and the pastry or biscuits are still crisp and warm.

Pro Tips

• Cut the chicken evenly: Aim for 1/2-inch cubes so the pieces cook at the same rate and stay tender.
• Warm broth prevents lumps: Adding warm, not cold, broth to the roux helps create a smooth, silky sauce.
• Do not rush the vegetable step: Let the mushrooms and onions cook long enough to brown slightly; that caramelization adds deep flavor.
• Control the thickness: The sauce should be creamy but spoonable. Adjust with a little extra broth or cream if it gets too thick after adding the chicken.
• Sherry is optional but lovely: Dry sherry adds old-school, restaurant-style flavor. If you skip it, consider adding a squeeze of lemon for brightness.

Variations

• Rotisserie chicken shortcut: Use 3 cups of diced cooked rotisserie chicken instead of browning raw chicken. Skip Step 2 and stir it in during Step 6 just to warm through.
• Turkey à la king: Swap the chicken for leftover cooked turkey, especially around the holidays. It is an excellent way to use leftovers.
• Lighter version: Use half-and-half instead of heavy cream and reduce the butter in the roux to 2 tbsp. The sauce will be slightly less rich but still comforting.

Storage & Make-Ahead

Cool the chicken à la king to room temperature, then transfer to an airtight container and refrigerate for up to 3 days. Reheat gently on the stovetop over low to medium-low heat, adding a splash of broth or milk to loosen the sauce as needed. Avoid boiling, which can cause the sauce to separate and the chicken to dry out. You can also freeze the sauce (without puff pastry, biscuits, or rice) for up to 2 months. Thaw overnight in the refrigerator before reheating gently. For best texture, bake puff pastry shells or biscuits fresh right before serving rather than storing them with the sauce.

Nutrition (per serving)

Approximate values for 1 of 4 servings, including sauce and puff pastry shell: about 750 calories; 38 g protein; 44 g fat; 51 g carbohydrates; 3 g fiber; 9 g sugar; 1,150 mg sodium. If you serve it over rice or biscuits instead of puff pastry, or use half-and-half instead of heavy cream, these numbers will change. Use this as a general guide rather than precise dietary information.