Ingredients

  • 3 pieces boneless, skinless chicken breast
  • 3 onions
  • 2 fresh bay leaves
  • 2 tablespoons extra-virgin olive oil
  • 8 ounces button mushrooms, sliced or quartered
  • 4 baby potatoes, diced
  • 2 parsnips, peeled and diced 1/2-inch thick
  • 2 small ribs celery, chopped
  • A few sprigs fresh sage leaves, very thinly sliced
  • Salt and freshly ground black pepper
  • 3 tablespoons butter
  • 3 tablespoons all-purpose flour
  • Splash white wine
  • 1 rounded tablespoon Dijon mustard
  • 2 cups chicken stock
  • 1/2 cup heavy cream
  • 1 sheet frozen puff pastry dough, defrosted
  • 1 egg

Method

  • Place the chicken breasts in a pot with 1 quartered onion and 1 bay leaf.
  • Fill the pan with just enough water to come to the top of the chicken breasts.
  • Bring the mixture to a low boil, reduce the heat to a simmer and poach the chicken 12 to 15 minutes.
  • Remove the chicken and dice or shred with forks.
  • Reserve the poaching liquid.
  • In the same pan, heat 2 tablespoons extra-virgin olive oil, a couple of turns of the pan over medium-high heat, add the mushrooms and lightly brown.
  • When the mushrooms are just tender, add 2 chopped medium onions, potatoes, parsnips, celery, sage, salt, pepper and remaining bay leaf.
  • Cover the pot and sweat the vegetables 10 minutes, stirring occasionally.
  • Remove the bay leaf.
  • Melt the butter in the pot, add the flour and stir to make a light roux.
  • Deglaze the pan with a splash of white wine and add one to 2 cups of reserved poaching liquid.
  • Whisk in the mustard and 2 cups chicken stock.
  • Stir in the cream.
  • Thicken to a light gravy consistency.
  • Adjust the salt and pepper and add in the chicken.
  • Reduce the heat to low and bake off the pastry tops.
  • For make-ahead meal: Bake off the pastry tops; cool the filling and store.
  • Reheat the filling, covered, over medium heat to a bubble, and then reduce the heat to a simmer.
  • To prepare the pastry tops: Cut the pastry into shapes which reflect the shape and size of the dishes or bowls you wish to serve the soup in.
  • Beat the egg with a splash of water and arrange the cut pastry on a nonstick baking sheet or on parchment-lined sheet pan.
  • Brush the dough with the egg wash and bake to golden at 425 degrees F, 12 minutes.
  • Cook's Note: Chicken and Mushroom filling can also be served as a thick soup with crusty, warm baguette for dipping.