Dice chicken, onion, shallot, and garlic; set aside.
2 ½ lb boneless skinless chicken breasts, 1 large onion, 1 shallot, 2 cloves garlic
Place puff pastry sheets onto a large cutting board. Cut each sheet into five 2-inch strips. Weave strips to make a lattice design. Freeze for 15 minutes or until ready to place over potpie.
2 sheets puff pastry
Preheat oven to 400°F/200⁰C
Season chicken with salt and pepper. In a large skillet, heat butter over medium-high heat; sauté chicken until browned, 5-7 minutes. Remove from pan.
1 tsp kosher salt, 1 tsp black pepper, 2 ½ lb boneless skinless chicken breasts
In same skillet, sauté onion and shallot until tender, 5-7 minutes. Stir in garlic and herbs; cook for one minute.
6 tbsp butter, 1 large onion, 1 shallot, 2 cloves garlic, 1/2 tsp dried thyme, 1/2 tsp rubbed sage
Stir in flour until blended; cook and stir 1 minute. Pour in in broth and 1 ½ cups of the light cream. Bring to a boil, stirring constantly; cook and stir until thickened, about 2 minutes.
3/4 cup all-purpose flour, 2 cups chicken broth, 1 ½ cups light cream
Stir in vegetables, lemon juice, add back the chicken and season, if necessary, with additional salt and pepper; return to a boil. Transfer to Stone Square Baker. Top with lattice, trimming to fit.
10 oz frozen mixed vegetables, 1 tbsp lemon juice, 2 ½ lb boneless skinless chicken breasts
Whisk together egg yolk and remaining light cream, then brush over puff pastry.
1 tbsp light cream, 1 large egg
Bake, uncovered, until filling is bubbling, and pastry is golden brown, 45-55 minutes. Cover loosely with foil if pastry starts getting too dark. Let stand15 minutes before serving.