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Creamy Parmesan Garlic Mushroom Skillet Chicken Breasts

Creamy Parmesan Garlic Mushroom Skillet Chicken Breasts with juicy, golden-seared chicken in a smooth garlic-Parmesan cream sauce. The one-skillet method features browned bits, tender mushrooms, and a final 165°F (74°C) simmer for a restaurant-style finish.
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 4 servings
Course: Dinner
Cuisine: American
Calories: 650
Ingredients Equipment Method Notes

Ingredients
  

For the Chicken
  • 4 boneless, skinless chicken breasts
  • 1.5 tsp kosher salt
  • 1 tsp black pepper
  • 1 tsp garlic powder
  • 1 tsp Italian seasoning
  • 2 tbsp olive oil
  • 2 tbsp unsalted butter
For the Mushroom Parmesan Sauce
  • 12 oz cremini mushrooms
  • 5 garlic
  • 2 tbsp unsalted butter
  • 1.5 cup heavy cream
  • 0.5 cup chicken broth
  • 1 cup freshly grated Parmesan cheese
  • 1 tsp Italian seasoning
  • 0.5 tsp onion powder
  • 0.25 tsp crushed red pepper flakes optional
  • 2 tbsp chopped fresh parsley
  • 0.25 tsp salt to taste
  • 0.25 tsp black pepper to taste

Equipment

  • 1 cast iron skillet

Method
 

Season and sear the chicken
  1. Pat the chicken breasts dry, then season both sides with kosher salt, black pepper, garlic powder, and Italian seasoning. Keep the surface dry for better browning.
  2. Heat the olive oil and 2 tbsp unsalted butter in a large skillet over medium-high heat until shimmering. You should see steady sizzling when chicken is added.
  3. Sear the chicken for 5–6 minutes per side until golden brown and nearly cooked through, then transfer to a plate. Leave any browned fond in the pan for the sauce.
Make the mushroom Parmesan cream sauce
  1. Add the remaining 2 tbsp unsalted butter to the skillet, then sauté the mushrooms for 6–8 minutes until golden and their moisture has evaporated. Stir so they brown evenly.
  2. Stir in the minced garlic and cook for 30 seconds until fragrant. Do not let it darken.
  3. Pour in the chicken broth, scraping up any browned bits from the bottom of the pan. Simmer off the pan juices for a cohesive sauce.
  4. Add the heavy cream, Italian seasoning, onion powder, and crushed red pepper flakes, then simmer gently for 3–4 minutes. Watch for slight thickening and small bubbles around the edges.
  5. Stir in the Parmesan cheese until melted and the sauce turns smooth and creamy. Keep the heat gentle to avoid graininess.
Finish and serve
  1. Return the chicken breasts and any accumulated juices to the skillet, spooning sauce over the top. This helps the chicken heat evenly and stay coated.
  2. Simmer for another 5 minutes until the chicken reaches 165°F (74°C). The sauce should bubble lightly and cling to the chicken.
  3. Sprinkle with chopped fresh parsley and serve immediately over mashed potatoes, buttered pasta, rice, or roasted vegetables. Add extra black pepper to taste if desired.

Notes

For best browning, keep the chicken surface as dry as possible before seasoning and searing. Store leftovers in an airtight container in the refrigerator for up to 3 days; rewarm gently in a skillet over low heat until hot. Freezing is not recommended because the cream sauce can separate when thawed. If you want a lower-fat option, use half-and-half instead of heavy cream and simmer slightly longer to thicken.