In 10-inch skillet, mix beef, pepperoni and pizza sauce. Heat to boiling over medium-high heat, stirring occasionally.
Separate or cut each can of dough into 4 rectangles (if using crescent rolls, press perforations to seal). Spoon meat mixture in center of each rectangle; sprinkle with 1 tablespoon of the cheese. Fold dough over filling; press edges with fork to seal. Sprinkle with remaining cheese. Place on ungreased cookie sheet.
Bake at 375°F 18 to 20 minutes.