Heat oven to 375° F. Trim fat from steak. Cut steak lengthwise into 2 to 3 strips and then crosswise into 1/2 inch thick slices. Spray 10-inch oven-proof skillet with cooking spray; cook over medium-high heat until hot.
Add beef, cook and stir 1 minute. Remove from skillet; season with pepper. Set aside. In same skillet, combine vegetables, water and thyme; cook and stir 2 to 3 minutes or until vegetables are thawed.
Stir in gravy; bring to a boil. Remove from heat; return beef to skillet. Separate dough into 8 triangles. Starting from wide ends, roll up halfway; arrange over beef mixture so pointed ends are directed toward center. Bake at 375° F for 17 to 19 minutes or until crescents are deep golden brown.Servings: 4