Heat oven to 325 degrees F. In a bowl, combine flour, salt and pepper; toss with beef until coated well. In a 6-quart Dutch oven, heat 1 tbsp oil over medium-high heat. In two batches, cook beef (adding 1 tbsp oil to second batch), turning, until browned, about 4 min. Transfer to a plate. Add carrots, celery, onion and garlic to pot. Cook, stirring, until wilted, 8 min. Stir in beef, mushrooms, wine, broth, steak sauce and Italian seasoning. Cover; bake 50 min. Remove from oven.

About 20 min before serving, stir together biscuit mix and milk until just combined.

Increase oven to 400 degrees F. (To make individual servings, transfer beef mixture to pint-size casserole pans.) Drop biscuit batter in mounds over beef mixture. Bake, uncovered, until biscuits are lightly browned, 15 to 20 min. Serves 6.