Good Old Meat Pie

Ingredients

• 1 recipe pastry for a 9 inch single crust pie
• 3 tablespoons margarine
• 1/2 cup chopped onion
• 1 potato, diced
• 1/3 cup all-purpose flour
• 1/2 teaspoon dried oregano
• 1/2 teaspoon garlic powder
• 1/4 teaspoon black pepper
• 1 1/4 cups beef broth
• 1 carrot, chopped
• 1 cup frozen green peas
• 2 cups cubed cooked or leftover beef