1️⃣ Preheat the oven:
Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.

2️⃣ Cook the sausage:
In a large skillet over medium heat, cook the sausage, breaking it up with a spoon, until browned and fully cooked. Drain excess grease if needed.

3️⃣ Make the gravy:
Add butter to the cooked sausage. Once melted, sprinkle in the flour and stir well to coat the sausage. Cook for 1-2 minutes. Gradually add the milk, stirring constantly until smooth. Simmer for 3-5 minutes until thickened. Stir in garlic powder, onion powder, salt, and pepper. Remove from heat and let cool slightly.

4️⃣ Prepare the puff pastry:
On a lightly floured surface, roll out each sheet of puff pastry slightly to even thickness. Place one sheet on the prepared baking sheet.

5️⃣ Assemble the pie:
Spoon the cooled sausage gravy evenly onto the center of the bottom pastry sheet, leaving a 1-inch border around the edges.

6️⃣ Top and seal:
Place the second sheet of puff pastry over the filling. Press the edges together and crimp with a fork to seal. Cut a few small slits in the top for steam to escape.

7️⃣ Egg wash:
Beat the egg with 1 tablespoon of water and brush the top of the pastry with the egg wash.

8️⃣ Bake:
Bake for 25-30 minutes, or until the puff pastry is golden brown and fully cooked.

9️⃣ Garnish and serve:
Let cool for a few minutes before slicing. Garnish with chopped parsley if desired, and serve warm.