→ Filling
01 - 2 tablespoons unsalted butter
02 - 1 medium yellow onion, diced
03 - 2 cloves garlic, minced
04 - 1 cup carrots, sliced
05 - 1 cup celery, sliced
06 - 2 tablespoons all-purpose flour
07 - 2 cups low-sodium chicken broth
08 - 1 pound boneless, skinless chicken breasts, cut into bite-sized pieces
09 - 1 cup asparagus, trimmed and cut into 1-inch pieces
10 - 1 cup fresh or frozen peas
11 - 1/3 cup heavy cream
12 - 1 teaspoon kosher salt
13 - 1/2 teaspoon freshly ground black pepper
14 - 2 tablespoons fresh parsley, finely chopped
→ Topping
15 - 1 sheet puff pastry, thawed
16 - 1 egg, beaten with 1 tablespoon water