# Components:
→ For the Filling
01 - 2 tablespoons unsalted butter
02 - 1 medium yellow onion, diced
03 - 2 medium carrots, diced
04 - 2 celery stalks, diced
05 - 2 cloves garlic, minced
06 - 1/3 cup all-purpose flour
07 - 2 cups low-sodium chicken broth
08 - 1 cup whole milk
09 - 2 cups cooked chicken breast, diced or shredded
10 - 1 cup frozen peas
11 - 1 teaspoon fresh thyme leaves
12 - 1 teaspoon salt
13 - 1/2 teaspoon freshly ground black pepper
→ For the Biscuit Topping
14 - 2 cups all-purpose flour
15 - 1 tablespoon baking powder
16 - 1/2 teaspoon baking soda
17 - 1 teaspoon salt
18 - 6 tablespoons cold unsalted butter, cubed
19 - 3/4 cup cold buttermilk
20 - 1 large egg, lightly beaten for egg wash
# Method:
01 - Set oven temperature to 400°F and allow it to reach full heat before baking.
02 - In a large skillet or Dutch oven, melt butter over medium heat. Add onion, carrots, and celery. Sauté for 6 to 8 minutes until vegetables are softened. Add minced garlic and cook for 1 additional minute.
03 - Sprinkle flour evenly over the sautéed vegetables. Cook while stirring constantly for 1 to 2 minutes until flour is completely absorbed and no raw flour remains visible.
04 - Gradually whisk in chicken broth and milk, stirring continuously to prevent lumps. Bring mixture to a gentle simmer and cook for 3 to 4 minutes until sauce reaches desired thickness.
05 - Stir in cooked chicken, frozen peas, thyme, salt, and black pepper. Remove skillet from heat and set aside.
06 - Pour the prepared filling into a 9 by 13 inch baking dish or large pie dish, spreading evenly.
07 - In a large bowl, whisk together flour, baking powder, baking soda, and salt. Add cold cubed butter and cut in using a pastry blender or your fingertips until the mixture resembles coarse breadcrumbs.
08 - Add cold buttermilk and gently stir until just combined. Avoid overmixing to maintain a tender crumb structure.
09 - Drop spoonfuls of biscuit dough evenly over the filling. Brush tops with beaten egg if desired for a golden, glossy appearance.
10 - Bake for 25 to 30 minutes until biscuit topping is golden brown and filling is visibly bubbling around the edges.
11 - Remove from oven and allow to rest for 5 to 10 minutes to allow filling to set slightly before portioning.