Begin by seasoning both sides of each chicken breast with salt, pepper, and the Italian seasoning blend. Ensure an even coating for maximum flavor.
Heat the olive oil and butter in a large, heavy-bottomed skillet over medium-high heat. Once the oil is shimmering and the butter is melted, carefully add the chicken breasts. Sear the chicken for approximately 6-7 minutes per side, or until golden brown and fully cooked (internal temperature should reach 165°F). Once cooked, remove the chicken from the skillet and set aside on a plate.
In the same skillet, introduce the sliced mushrooms. Sauté them for about 5 minutes, stirring occasionally, until they become tender and beautifully browned.
Add the minced garlic to the skillet with the mushrooms, continuing to sauté for an additional 1-2 minutes, or until the garlic is fragrant but not burnt.
Gently pour in the chicken broth, bringing the mixture to a simmer. Use a wooden spoon to scrape up any delicious brown bits from the bottom of the skillet, adding depth to your sauce. Allow the broth to reduce slightly for about 3-4 minutes.
Lower the heat to a gentle simmer and stir in the heavy cream, allowing the sauce to thicken slightly over the next 2-3 minutes, stirring occasionally.
Carefully return the seared chicken breasts to the skillet, ensuring they are well-coated in the rich creamy garlic mushroom sauce. Let this simmer for another 2-3 minutes to reheat the chicken and meld the flavors together.
Taste the sauce and adjust the seasoning with additional salt and pepper if needed.
Before serving, sprinkle the dish generously with freshly chopped parsley for a pop of color and flavor.
Notes
Serve over mashed potatoes or pasta for a complete meal.