HEAT oven to 375ºF.
BROWN meat with onions in large nonstick skillet. Stir in corn, Cheez Whiz and ketchup; set aside.
ADD hot 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 out to 12-inch circle; transfer to baking sheet sprayed with cooking spray.
SPOON meat mixture onto centre of dough; spread to within 2 inches of edge. Fold edge of dough over meat, leaving centre uncovered.
BAKE 20 min. Top filling with shredded cheese; bake 2 to 3 min. or until melted. Sprinkle with parsley.
serving size = 1/6 recipe (180 g)