Chicken Pot Pie

Ingredients:

• 1 lb boneless, skinless chicken breasts, cubed
• 1/3 cup butter
• 1/3 cup all-purpose flour
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper
• 1/4 teaspoon onion powder
• 1 3/4 cups chicken broth
• 2/3 cup milk
• 2 cups frozen mixed vegetables (peas, carrots, green beans, corn)
• 1 refrigerated pie crust or homemade pie crust
• 1 egg, beaten