Puff Pastry Chicken Pot Pie Recipe

Ingredients

• 1 (17.5 ounce) package frozen puff pastry, thawed
• 0.33333334326744 cup butter
• 0.5 medium onion, chopped
• 1 stalk celery, sliced
• 0.33333334326744 cup flour
• 1 teaspoon salt
• 0.5 teaspoon ground black pepper
• 0.5 teaspoon celery seed
• 1 cup milk
• 2 cups chicken broth
• 1 pound cooked chicken breast, cubed
• 1 (12 ounce) package frozen mixed vegetables