Heat oven to 375°F. In small bowl, mix bacon and green onions.
Unroll dough and separate into 4 rectangles. Press each into 5 1/2x5-inch rectangle, firmly pressing perforations to seal. Cut each rectangle into 4 (2 1/2-inch) squares.
Top each dough square with rounded measuring teaspoon bacon mixture, then with measuring teaspoon cheese. Fold dough over filling, forming triangle; press edges to seal. On ungreased cookie sheets, place triangles 2 inches apart.
Brush tops with beaten egg. Sprinkle lightly with Parmesan cheese.
Bake 9 to 11 minutes or until golden brown. Serve warm.