1. Heat oil in large nonstick skillet over medium heat until hot. Add mushrooms and 1 clove minced garlic; cook and stir 2-4 min. or until mushrooms are tender and browned. Remove; keep warm.
2. Combine thyme and remaining garlic; press evenly onto beef steaks. Place steaks in same skillet over medium heat; cook 8-11 min. for medium rare to medium doneness, turning occasionally. Remove to platter.
3. Carve steaks into slices. Season with salt and pepper, as desired. Top with mushrooms.
* Recipe Courtesy of The Beef Checkoff