In a shallow bowl, combine the flour, salt, pepper, and oregano.
Coat each chicken breast evenly with the flour mixture.
Heat the butter and olive oil in a large skillet over medium heat.
Cook the chicken for about 4–5 minutes per side until lightly golden.
Add the sliced mushrooms and cook for 3 minutes until softened.
Pour in the chicken broth, white grape juice, balsamic vinegar, and remaining broth.
Stir gently to combine, scraping any browned bits from the bottom of the pan.
Cover and simmer for 10 minutes, turning the chicken once, until fully cooked.
Spoon the flavorful mushroom sauce over the chicken and serve immediately.
This Chicken Marsala Recipe pairs beautifully with creamy mashed potatoes, buttered noodles, steamed vegetables, or fluffy rice.