Heat oven to 350°F. Grease eight (10-oz.) custard cups or large muffin cups.
Trim fat from steak. Cut steak lengthwise into 2 to 3 strips and then crosswise into 1/2-inch thick slices.
Heat oil in large skillet over medium-high heat until hot. Add beef; cook and stir until browned. Add garlic salt, pepper, gravy mix and water. Bring to a boil, stirring constantly. Add potatoes, carrots, peas and onions; mix well. Simmer 5 minutes. Set aside.
Separate dough into 8 biscuits. Press each biscuit to form 5 1/2-inch round. Place each biscuit round into greased custard cup; firmly press in bottom and up sides, forming 1/4-inch rim. Spoon about 3/4 cup beef mixture into each cup.
Bake at 350°F. for 14 minutes. Cover with foil. Bake an additional 8 minutes or until biscuits are golden brown and beef mixture is thoroughly heated.