How to Cook Chicken Pot Pie Soup

Ingredients

• 2 tablespoons unsalted butter
• 1 onion, chopped
• 3 cloves garlic, minced
• 2 carrots, peeled and chopped
• 2 stalks celery, chopped
• 1/4 cup all-purpose flour
• 4 cups chicken broth
• 1 cup milk
• 1 teaspoon dried thyme
• 1/2 teaspoon dried rosemary
• 1/2 teaspoon dried sage
• Salt and pepper to taste
• 2 cups cooked and shredded chicken
• 1 cup frozen peas
• 1 cup frozen corn
• 1 sheet puff pastry, thawed
• 1 egg, beaten