Creamy chicken filling under a golden biscuit lid. This high calorie chicken lunch is what comfort food was invented for — warm, filling, nostalgic.
Preheat oven to 400°F. In a large skillet over medium heat, melt the butter and sauté onion, celery, and carrots for 5 minutes until softened.
Sprinkle the flour over the vegetables and stir constantly for 2 minutes to cook out the raw flour taste.
Slowly pour in chicken broth and milk, stirring continuously, then bring to a gentle simmer. Cook for 5–7 minutes until the sauce thickens.
Add shredded chicken, peas, salt, pepper, thyme, and garlic powder. Stir well and simmer for an additional 3 minutes to combine flavors.
Pour the filling into a 9x13-inch baking dish. Place biscuits evenly on top of the filling. Bake for 25–30 minutes until the biscuits are golden brown and the filling bubbles around the edges. Let rest for 5 minutes before serving.