01 -
Preheat oven to 375°F. In a large skillet, melt 2 tbsp unsalted butter over medium heat. Add 1/2 yellow onion, finely diced, and cook for 3-4 minutes until softened. Stir in 2 cloves garlic, minced, and 1 tsp dried thyme, cooking for another minute until fragrant.
02 -
Sprinkle 1/4 cup all-purpose flour over the cooked aromatics in the skillet. Whisk constantly for 1-2 minutes, creating a thick paste (roux). This forms the essential base for your Easy Homemade Chicken Pot Pie Casserole's creamy sauce.
03 -
Gradually whisk in 1 3/4 cups low-sodium chicken broth, then 1/2 cup whole milk, ensuring no lumps. Bring the mixture to a gentle simmer, stirring frequently, until the sauce thickens to your desired consistency, about 3-5 minutes.
04 -
Remove the skillet from heat. Stir in 2 cups cooked chicken, shredded, and 1 cup frozen mixed vegetables (peas, carrots, corn). Season the filling with 1/2 tsp salt and 1/4 tsp black pepper. This completes the hearty core of your Easy Homemade Chicken Pot Pie Casserole.
05 -
Pour the chicken and vegetable filling evenly into a 9x13 inch baking dish (or similar 3-quart dish). Open the 1 (16.3 oz) can refrigerated biscuit dough (8 biscuits) and arrange the biscuits on top of the filling, leaving a small space between each.
06 -
Bake for 25-30 minutes, or until the biscuits are golden brown and cooked through, and the filling is bubbly around the edges. Keep an eye on the biscuits to prevent over-browning. This final bake creates the perfect Easy Homemade Chicken Pot Pie Casserole.
07 -
Carefully remove the casserole from the oven. Let it rest for 5-10 minutes before serving. This allows the sauce to set slightly and prevents burns from the hot filling, ensuring a more enjoyable Easy Homemade Chicken Pot Pie Casserole experience.