This hearty puff pastry pie is filled with tender beef, mushrooms, and onions in a rich gravy. The puff pastry is golden brown and flaky, while the filling is savory and satisfying. To make the filling, brown some beef in a skillet, then sauté some mushrooms and onions until tender. Add some beef broth, flour, and herbs to make a thick gravy. Pour the filling into a puff pastry-lined pie dish, cover with another layer of puff pastry, and bake until golden brown and bubbly.
