Walnut Chicken With Mushrooms in Creamy Mustard Sauce

I remember the first time I made this dish. It was a rainy Sunday afternoon, and I was experimenting with different mustard sauces, determined to find the perfect balance of tangy and savory. The aroma of garlic sautéing in butter filled the kitchen, mingling with the earthy scent of mushrooms. When I added the toasted walnuts, it was like a missing piece clicked into place, elevating the chicken to something truly special. Even now, years later, the taste of this creamy, nutty chicken evokes a sense of comfort and culinary satisfaction.

Recipe Overview

• Prep Time: 20 minutes
• Cook Time: 45 minutes
• Total Time: 1 hour 5 minutes
• Servings: 4
• Yields: 4 chicken breasts
• Dietary Type: None Specified

Ingredients

• 4 boneless, skinless chicken breasts
• 1 cup low sodium chicken broth, divided
• ½ cup finely chopped walnuts, divided
• 4 teaspoons minced garlic, divided
• 2 teaspoons dried basil or 2 teaspoons other dried herbs (such as thyme or oregano)
• 1 teaspoon salt (to taste)
• 1 teaspoon pepper (to taste)
• 8 ounces sliced mushrooms
• 1 tablespoon butter
• 1 tablespoon Dijon mustard
• ½ – 1 cup light cream
• 1 green onion, chopped or 1 scallion, chopped (for garnish)

Equipment Needed

• 8×8 inch or 9×9 inch baking dish
• Skillet
• Another skillet
• Measuring cups and spoons

Instructions

1. In a mixing bowl, combine ½ cup of the chicken broth, ¼ cup of the chopped walnuts, and 2 teaspoons of minced garlic.
2. Pour this mixture into your 8×8 or 9×9 inch baking dish.
3. Arrange the chicken breasts in the baking pan, turning them to ensure they are well coated with the nutty broth sauce.
4. Season both sides of the chicken breasts with basil, salt, and pepper.
5. Place the pan in the refrigerator to marinate for about 1 hour. (If you’re running short on time, you can skip the 1-hour refrigeration step; just be sure the chicken is well coated on all sides with the nutty broth sauce.)
6. Bake the chicken breasts in the nutty broth sauce for about 30-45 minutes at 375 degrees Fahrenheit, or until the juices run clear when pierced with a fork. The internal temperature of the chicken should reach 165°F (74°C).
7. When the chicken is about half done (approximately 15-20 minutes into the roasting time), heat a skillet over medium heat. Add the remaining ¼ cup walnuts and remaining ½ cup broth. Sauté for about 3-4 minutes.
8. Add the sliced mushrooms to the skillet and stir, continuing to sauté until the mushrooms are tender, usually another 5-7 minutes.
9. In a separate skillet, melt the butter over medium-low heat. Add the remaining 2 teaspoons garlic and sauté for about 2 minutes, being careful not to burn the garlic.
10. Add the Dijon mustard to the skillet with the garlic and butter, and stir well to combine.
11. Pour in the light cream and continue cooking, stirring constantly, until the sauce just begins to thicken, about 3-5 minutes.
12. Once the chicken breasts are fully cooked, pour the mustard sauce over them in the baking dish.
13. Top with the nutty mushroom mixture.
14. Garnish with chopped green onions (or scallions) over the top, if desired.

Note for Thicker Chicken Breasts: If you are using extra thick chicken breasts, consider cutting a slit about 1 inch in depth into the side of each breast (to create a pocket) before placing it in the oven. This ensures more even cooking. You can also chop the mushrooms instead of leaving them sliced. Then, step #12 would be to spoon the nutty mushroom mixture inside the pockets after the chicken breasts are fully cooked. Then pour the mustard sauce over the stuffed, cooked chicken breasts and top with chopped green onions.

Expert Tips & Tricks

• Toasting the Walnuts: For an even richer, nuttier flavor, toast the walnuts in a dry skillet over medium heat for a few minutes before chopping them. Watch them carefully, as they can burn quickly.
• Deglazing the Pan: After removing the chicken from the baking dish, consider deglazing the pan with a splash of white wine or additional chicken broth. Scrape up any browned bits from the bottom of the pan and add them to the mustard sauce for extra flavor.
• Preventing Dry Chicken: Avoid overcooking the chicken by using a meat thermometer. If the chicken breasts are very thick, you can also gently pound them to an even thickness before marinating.
• Thickening the Sauce: If the mustard sauce isn’t thickening enough, you can whisk in a cornstarch slurry (1 tablespoon cornstarch mixed with 2 tablespoons cold water) before it comes to a simmer.
• Fresh Herbs: If you have fresh herbs on hand, substitute them for the dried basil for a brighter flavor. Use about 1 tablespoon of chopped fresh basil.

Serving & Storage Suggestions

Serve the Walnut Chicken with Mushrooms in Creamy Mustard Sauce hot, directly from the oven. It pairs beautifully with a side of rice, mashed potatoes, or roasted vegetables like asparagus or broccoli. Garnish with fresh parsley or a lemon wedge for an extra touch of elegance.

Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, gently warm the chicken in a skillet over low heat, adding a splash of chicken broth or cream if the sauce has thickened too much. You can also microwave the chicken, but be careful not to overcook it, as it can become dry. Freezing is not recommended as the sauce may separate upon thawing.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	340.8 kcal	N/A
Calories from Fat	183 kcal	N/A
Total Fat	20.4 g	31%
Saturated Fat	6.9 g	34%
Cholesterol	95.9 mg	31%
Sodium	755 mg	31%
Total Carbohydrate	7.5 g	2%
Dietary Fiber	2 g	7%
Sugars	1.7 g	N/A
Protein	33.7 g	67%

Note: Nutritional information is an estimate and may vary based on specific ingredients and cooking methods.

Variations & Substitutions

• Gluten-Free: This recipe is naturally gluten-free! Just ensure the chicken broth and Dijon mustard you use are also certified gluten-free.
• Dairy-Free: To make this dish dairy-free, substitute the light cream with full-fat coconut milk or a cashew cream sauce. Be aware this will slightly alter the flavor profile.
• Different Nuts: Try using pecans or almonds instead of walnuts for a different nutty flavor.
• Vegetarian Option: Substitute the chicken breasts with thick slices of firm tofu or portobello mushrooms for a vegetarian version of this dish. Adjust cooking times accordingly.
• Spicy Kick: Add a pinch of red pepper flakes to the mustard sauce for a spicy kick.

FAQs (Frequently Asked Questions)

Q: Can I use bone-in chicken for this recipe?
A: Yes, you can use bone-in chicken thighs or breasts. However, you will need to adjust the cooking time accordingly, ensuring the chicken is cooked through to an internal temperature of 165°F (74°C).

Q: Can I make this dish ahead of time?
A: You can prepare the chicken and the nutty broth sauce a day ahead of time and store them in the refrigerator. However, it’s best to make the mustard sauce fresh just before serving to prevent it from separating.

Q: What kind of mushrooms work best in this recipe?
A: Cremini or button mushrooms are a great choice, but you can also use more exotic varieties like shiitake or oyster mushrooms for a more complex flavor.

Q: Can I use heavy cream instead of light cream?
A: Yes, you can use heavy cream for a richer, more decadent sauce. However, the sauce will be thicker, so you may need to add a little extra chicken broth to thin it out.

Q: How do I prevent the walnuts from burning while sautéing?
A: Keep a close eye on the walnuts while they’re sautéing, and stir them frequently. If they start to brown too quickly, reduce the heat or add a splash of chicken broth to the skillet.

Final Thoughts

This Walnut Chicken with Mushrooms in Creamy Mustard Sauce is more than just a recipe; it’s an invitation to create a comforting and flavorful meal that will impress your family and friends. Don’t be afraid to experiment with different herbs, nuts, or vegetables to make it your own. I encourage you to try this recipe and share your feedback with me. Pair it with a crisp white wine and a simple salad for a complete and satisfying dining experience. Happy cooking!