Classic Comfort Food: Chicken Pot Pie

Ingredients

• 2 1/2 cups all-purpose flour
• 1 tablespoon sugar
• 1 teaspoon salt
• 1 cup cold unsalted butter, cut into cubes
• 1/2 cup cold buttermilk
• 1-2 tablespoons cold water
• 1 large egg, beaten, for the egg wash
• 1/4 cup unsalted butter
• 1/3 cup diced onion
• 2 medium carrots, sliced (about 1 cup)
• 1 stalk celery, sliced (about 1/2 cup)
• 2 cloves garlic, minced
• 1/3 cup all-purpose flour
• 1 1/2 teaspoons minced fresh thyme
• 1 tablespoon minced fresh Italian parsley
• 1/2 teaspoon black pepper
• 1 3/4 cups chicken broth
• 1/2 cup heavy cream
• 3 cups shredded chicken or turkey
• 1 cup frozen peas