ground beef, browned and drained
cheddar cheese, shredded
puff pastry sheet, thawed
Cool cooked beef and cut puff pastry into 5 inch squares.
Combine filling ingredients.
In center of squares, put a heaping 1/3 cupful of filling; moisten edges of pastry with water, fold over to form triangles; press with fork to seal.
Bake at 400 about 20 minutes or until golden brown.