Homemade Chicken Pot Pie

Ingredients

• 2 (nine-inch) unbaked pie crusts, divided
• 1 tablespoon canola oil
• 1 pound skinless, boneless chicken breast halves, cubed
• salt, to taste, for chicken
• pepper, to taste, for chicken
• 3 carrots, sliced
• 1/2 cup celery, sliced
• 2 medium potatoes, cubed in one-half-inch cubes
• 1 cup frozen green peas
• 1/3 cup chopped onion
• 1/3 cup butter
• 1/3 cup all-purpose flour
• 3/4 teaspoon salt
• 1/4 teaspoon black pepper
• 1/2 teaspoon celery seed
• 2 cup chicken broth
• 1 cup milk
• egg wash
• 2 tablespoon water