Brown meat with onions in large skillet; drain. Stir in corn, ketchup and steak sauce. set aside.
Add water to baking mix; stir until mixture forms dough. Shape into ball. Place on lightly floured surface; knead 5 times or until smooth and no longer sticky. Roll into 12 inch circle; transfer to baking sheet sprayed with cooking spray.
Spoon meat mixture onto center of dough. spread to within 2 inches of edge. Fold edge of dough over meat, leaving center uncovered.
Bake 20 min or until melted. Sprinkle with parsley.