Creating Olive Garden Chicken Marsala is straightforward when you follow these steps:

1. Prepare the Chicken: Season the chicken breasts with salt and pepper on both sides. Dredge each breast in flour, shaking off any excess.
2. Heat the Oil: In a large skillet over medium-high heat, add the olive oil. Once hot, add the chicken breasts.
3. Brown the Chicken: Cook the chicken for about 5-7 minutes on each side until golden brown and cooked through. Remove the chicken from the skillet and set aside.
4. Sauté the Mushrooms: In the same skillet, add the sliced mushrooms. Sauté for about 5 minutes, or until they are browned and have released their moisture.
5. Add Garlic: Stir in the minced garlic and cook for an additional minute until fragrant.
6. Deglaze the Pan: Pour in the Marsala wine, scraping up any browned bits from the bottom of the pan. Allow it to simmer for 2-3 minutes.
7. Add Chicken Broth: Stir in the chicken broth and return the chicken to the skillet. Simmer for another 5-7 minutes, allowing the sauce to thicken.
8. Finish with Butter and Thyme: Add the butter and thyme to the sauce, stirring until the butter is melted and the sauce is glossy.
9. Serve: Remove from heat and garnish with chopped parsley before serving.

Following these steps will yield an incredible Olive Garden Chicken Marsala that is sure to impress.