In a skillet, brown beef and onion; drain. Add the next eight ingredients; bring to a boil. Reduce heat; cover and simmer for 15 minutes. Cool.
Roll each loaf or dough into a 16 x 8-inch rectangle, about 1/4-inch thick. Cut each into eight 4-inch squares; top each with 1/4 cup filling and 1 tablespoon cheese. Bring the four corners together up over filling; pinch seams to seal.
Place on greased baking sheets. Cover and let rise for 15 minutes. Bake at 350*F (175*C) for 20 to 25 minutes or until browned. Serve hot.