Pound the chicken breasts to an even thickness and season with salt and pepper.
Dredge the chicken breasts in the flour, shaking off excess.
Heat olive oil over medium-high heat in a large skillet and cook the chicken breasts until golden brown on both sides. Remove and set aside.
In the same skillet, add butter and sliced mushrooms. Cook until mushrooms are browned and tender.
Add minced garlic and cook for an additional minute until fragrant.
Pour in the Marsala wine and chicken broth, scraping up any browned bits from the bottom of the skillet. Allow to simmer for 3-4 minutes.
Stir in the heavy cream and return the chicken to the skillet. Simmer for another 5-7 minutes until the chicken is cooked through and the sauce has thickened.
Garnish with chopped parsley and serve hot.
Notes
This dish pairs well with pasta or mashed potatoes.