Leftover Steak Pot Pie With Vegetables

Name: Leftover Steak Pot Pie With Vegetables
Prep time: 30 min
Cook time: 45 min
Total time: 1 h 15 min
Cuisine: American
Ingredients: 1/2 cup onion (chopped); 6 tablespoons butter; 1/2 cup all-purpose flour; 1/2 teaspoon salt; 3 cups beef broth; 3 cups beef (cubed; leftovers if you have them); 1 1/2 cups green peas and carrots (frozen; cooked and drained); 1 tablespoon parsley (dried); 1 batch pie pastry (for a 1-crust pie); 2 tablespoons evaporated milk (or regular milk; more or less as needed)