Start by melting the butter over medium heat in a large skillet. This is where the magic begins! You want it to become bubbly but not browned. The aroma of the melting butter fills the air, creating a warm atmosphere while you cook.
Add in the shallot and mushrooms to the skillet. Sauté them until they become translucent, about five to seven minutes. Stir occasionally. Watching the mushrooms soften and release their juices is a delightful sight, and the scent is simply irresistible!
Nestle in the garlic, along with the kosher salt and black pepper. Sauté this mix for about thirty seconds until fragrant. The smell of the garlic will awaken your culinary senses and elevate the dish.
Sprinkle in the all-purpose flour and stir until all the flour is coated with the butter. This step is crucial. You want to cook the flour for a minute or so, allowing it to absorb the flavors and remove any raw taste.
Next, whisk in the chicken broth and half-and-half, bringing the mixture to a simmer. As it heats, you'll notice it thickening. Keep stirring, watching as it turns into a creamy sauce that coats the back of a spoon.
Once simmering, reduce the heat and let it cook for five minutes until thickened. This is where the flavors meld together beautifully. Keep an eye on it; stirring occasionally ensures nothing sticks to the bottom!
Now, stir in the frozen peas, pimentos, and the shredded cooked chicken. Let everything simmer together for another five minutes until warmed through. The peas will brighten up the dish with their vibrant green color.
Finally, serve your Chicken a la King over pasta or rice if desired. This is the moment you’ve been waiting for! The creamy sauce cascading over the dish is a sight to behold, and you’ll be eager to dig in.