1Move oven rack to lowest position; heat oven to 450°F. Spray 12-inch pizza pan with cooking spray. In 10-inch skillet, cook beef over medium heat, stirring occasionally, until thoroughly cooked; drain. Stir in 1/2 cup of the barbecue sauce; set aside.
2In medium bowl, stir Bisquick mix, very hot water and oil until dough forms; beat vigorously 20 strokes with spoon. Using fingers dipped in Bisquick mix, press dough in pizza pan; pinch edge to form 1/2-inch rim. Spread remaining 1 cup barbecue sauce over crust. Top with beef mixture and pickle slices. Top with cheese.
3Bake 12 to 15 minutes or until crust is brown and cheese is melted.