Creating Chicken Marsala with Mushrooms is simple if you follow these easy steps:

1. Prepare Chicken: Season the chicken breasts with salt, pepper, and garlic powder on both sides.
2. Heat Pan: In a large skillet, heat the olive oil and butter over medium-high heat until melted.
3. Sear Chicken: Add the chicken breasts to the skillet. Cook for about 5-7 minutes on each side until golden brown. Remove from the skillet and set aside.
4. Sauté Mushrooms: In the same skillet, add sliced mushrooms and cook for about 4-5 minutes until they've released their moisture and become tender.
5. Add Marsala Wine: Pour the Marsala wine into the skillet, scraping up any browned bits from the bottom of the pan. Let it simmer for 2-3 minutes.
6. Add Chicken Broth and Herbs: Stir in the chicken broth and dried oregano. Bring the mixture to a gentle boil.
7. Combine Chicken and Sauce: Return the chicken to the skillet, spooning the sauce over the top. Cover and simmer for about 10-15 minutes until the chicken is cooked through and reaches an internal temperature of 165°F (74°C).
8. Garnish: Remove from heat and sprinkle with chopped fresh parsley before serving.
9. Serve: Plate the chicken and spoon the mushroom sauce over the top.

By following these simple steps, you will create an incredible Chicken Marsala with Mushrooms that is sure to impress.