Ingredients:
- 1¼ cups (156 g) all-purpose flour
- ½ cup (113 g) unsalted butter, frozen for 15 minutes, then coarsely grated
- ½ tsp (3 g) fine salt
- 4 to 5 tbsp (60 to 75 ml) ice water
- 1 lb (450 g) boneless, skinless chicken thighs, cut into 2.5 cm pieces
- 2 tbsp (28 g) unsalted butter
- 1 medium yellow onion, diced (150 g)
- 2 medium carrots, diced (130 g)
- 2 celery stalks, diced (60 g)
- 3 tbsp (24 g) all-purpose flour
- 1½ cups (360 ml) low-sodium chicken broth
- ½ cup (120 ml) whole milk
- 1 cup (145 g) frozen peas
- 1 tsp (3 g) dried thyme
- ½ tsp (3 g) fine salt
- ¼ tsp (1 g) black pepper
- 1 egg yolk (17 g)
- 1 tbsp (15 ml) whole milk
Instructions:
- Whisk the flour and ½ tsp fine salt in a medium bowl.
- Grate the frozen butter directly into the flour. Toss with your fingertips until each piece is coated. The mixture should look like coarse sand with some pea-sized bits still visible.
- Drizzle in 4 tbsp ice water and stir with a fork. Add the fifth tablespoon only if the dough won't hold together when pressed. Mix only until it holds together.
- Gather the dough into a flat disk, wrap it in plastic, and freeze for 15 minutes until firm and cool, not soft or sticky.
- Heat 1 tbsp of the butter in a 12-inch skillet or Dutch oven over medium-high heat. Brown the chicken for 3 to 4 minutes, until the outside is no longer pink. Transfer to a plate. It does not need to be cooked through yet.
- Melt the remaining butter in the same pan. Add the onion, carrots, and celery and cook for 5 minutes, until the onion is translucent and the vegetables soften.
- Sprinkle in 3 tbsp flour and stir constantly for 1 minute, until it smells toasty and no longer raw.
- Slowly whisk in the broth and milk. Simmer for 3 to 5 minutes, until the sauce coats the back of a spoon.
- Return the chicken and any juices to the pan. Add the thyme, ½ tsp salt, and pepper and simmer for 8 minutes. Stir in the peas for the final 2 minutes. The chicken is done when it reaches 165°F (74°C) in the thickest piece.
- Pour the hot filling into a 9-inch deep-dish pie dish or 2-quart baking dish and spread it evenly.
- Preheat the oven to 400°F (200°C) while the filling rests.
- Roll the chilled dough on a lightly floured surface into an 11-inch (28 cm) round, about ⅛ inch (3 mm) thick. Roll once, in one direction, without pressing down hard.
- Drape the dough over the hot filling. Trim the edge to ½ inch (1.25 cm) past the rim, then crimp the edges to seal.
- Cut four 1-inch (2.5 cm) steam vents in the top. Whisk the egg yolk with 1 tbsp milk and brush the top evenly.
- Bake for 30 to 35 minutes, until the crust is deep golden and the filling bubbles through the vents.
- Let the pie rest for 10 minutes before serving so the filling sets.