Ingredients

• 1 tablespoon vegetable oil
• 1 pound cubed beef stew meat
• 1 large onion, chopped
• 1 (1 ounce) package dry mushroom gravy mix
• 1 cup water
• 1 teaspoon Worcestershire sauce
• 1 pinch salt and pepper to taste
• 1 sheet frozen puff pastry, thawed
• 1 egg
• 1 tablespoon water

Instructions

1. Heat the oil in a large skillet over medium-high heat. Add beef stew meat, and cook until browned on the outside. Add the onion; cook and stir until tender, about 5 minutes. Stir in the mushroom gravy mix and 1 cup of water. Season with Worcestershire sauce, salt, and pepper. Turn heat to low, and simmer for 20 to 30 minutes.
2. Preheat the oven to 400 degrees F (200 degrees C). Transfer the beef mixture to a casserole dish. Roll out the puff pastry to cover the top of the casserole dish. Press edges onto the rim of the dish to seal. Whisk together the egg and 1 tablespoon of water in a small cup using a fork. Brush over the top of the pastry.
3. Bake for 20 minutes in the preheated oven, until the pastry is puffed and golden brown.