Heat oven to 350°F. Wrap biscuits loosely in foil. Reheat 6 to 8 minutes or until hot.
Meanwhile, in 2-quart saucepan, heat turkey, gravy and peas over medium-high heat until hot, stirring constantly. Reduce heat to medium. Stir in sour cream; cook and stir until thoroughly heated.
To serve, split warm biscuits. Place 1 split biscuit on each plate; top with turkey mixture. Season with pepper.