Sprinkle steak with salt, pepper and garlic powder; set aside. Coat a large skillet with non-stick vegetable spray and heat to medium-high. Add mushrooms and garlic; cook, stirring frequently for 5 minutes or until mushrooms are golden. Remove from heat and set aside. Saute or broil steak and set aside. In skillet, reheat mushroom mixture over medium-high heat. Add wine to mixture and bring to a boil; cook for about 2 minutes or until wine is reduced. Place steak on a serving plate and top with mushroom mixture.
I completely loved this dish, though I made it with cooking sherry because I couldn't find the Marsalla. Will find the marsalla still and try it tha way as well. But I was the only one out of me, my husband and 4 children that did like it.
Wonderful! Made it with marsala. It seemed like such an indulgent dinner. My husband raved and raved. I will definitely be making it again. Might try the mushroom sauce over grill chicken breasts when the budget doesn't allow for tenderloin...