MIX flour, salt and baking powder in large bowl. Cut in shortening with pastry blender or two knives until mixture resembles coarse crumbs. Add hot water; stir until well blended.
PLACE dough on lightly floured surface; knead until smooth and no longer sticky. (Do not overwork the dough or the gorditas will be tough.) Divide dough into 12 pieces; flatten each into 5- or 6-inch circle.
SPRAY large heavy skillet lightly with cooking spray. Heat on medium-high heat. Add one or two gorditas; cook 1 to 2 min. on each side or until lightly browned on both sides. Repeat with remaining gorditas, spraying skillet with additional cooking spray as needed.