Heat Oven To 375 Degrees F. Unroll Dough On Cookie Sheet And Separate Into 4 Rectangles; Press Each Into 6X4-Inch Rectangle, Firmly Pressing Perforations To Seal. Spread 1 Tablespoon Pizza Sauce On Half Of Each Rectangle To Within 1 Inch Of Edge. Sprinkle Each With 3 Tablespoons Cheese; Top With 6 Slices Pepperoni. Fold Dough Diagonally Over Filling; Firmly Press Edges With Fork To Seal. Sprinkle Each Triangle With 1/4 Teaspoon Grated Cheese. With Fork, Prick Top Of Each To Allow Steam To Escape. Bake 13 To 15 Minutes Or Until Deep Golden Brown. Serve Warm.