To make filling: Combine beef, green onion, onion, jalapeno pepper, garlic, salt and pepper in medium bowl; mix well. Stir in potatoes and enough of the beef broth to moisten and hold mixture together.
Preheat oven to 400 degrees. Roll out each pastry sheet to 12X12-inch square on lightly floured surface. Cut each square into nine 4-inch squares. Place rounded tablespoonful of filling on each square. Fold over to form triangle; seal edges with fork. Place on baking sheet. Bake about 20 minutes or until golden brown.
