Slow-cooked Steak Pie

Name: Slow-cooked Steak Pie
Cuisine: Mediterranean, American, Greek, Southern, African, Moroccan, European
Ingredients: 700g Beef Stewing Steak; A handful of chopped mushrooms; A handful of shallots (halved) 1 large onion also works.; 300ml beef stock; 1tbsp Worcestershire sauce; 1tsp dried parsley; 1tsp dried thyme (feel free to use fresh herbs if your feeling fancy); 1 bay leaf; 1 garlic bulb mashed or 1tsp paste; Salt and pepper to taste; 1 tbsp beef or onion gravy granuals; Puff pastry (I’m super lazy and prefer to use ready rolled); 1 egg; 1 tbsp milk