- Combine the flour, salt, and pepper in a shallow dish. 
- Dredge the chicken breasts in the flour mixture, coating them well. 
- Heat the olive oil and butter in a large skillet over medium heat. 
- Add the chicken breasts to the skillet and cook for about 3-4 minutes on each side until golden brown. 
- Remove the chicken from the skillet and set aside. 
- Add the sliced mushrooms to the skillet and cook until they start to brown, about 5-6 minutes. 
- Add the minced garlic to the mushrooms and cook for an additional 1 minute until fragrant. 
- Pour in the Marsala wine and chicken broth, stirring well to combine. 
- Return the chicken breasts to the skillet, covering them with the mushroom sauce. 
- Let the chicken simmer for about 10 minutes until fully cooked and the sauce has thickened.