Make the Sauce: In a small bowl, stir together the cream of mushroom soup and milk until smooth. Set aside.
Season the Pork Chops: Pat the pork chops dry with a paper towel. Then, season both sides with garlic powder, salt, and pepper.
Sear the Pork Chops: Heat a large skillet over medium heat and add a splash of olive oil. Sear the pork chops for 3-4 minutes per side, until golden brown. Bone-in pork chops may take 4-5 minutes per side. Don’t forget the edges. Hold the chops on their sides for 30-60 seconds to render them slightly. Once done, remove the pork chops from the pan, place them on a cutting board, and set them aside.
Sauté: In the same skillet, add sliced mushrooms, diced onion, and thyme. Cook for 5-7 minutes, stirring occasionally, until softened and fragrant.
Sauce: Pour in the prepared cream of mushroom soup mixture and stir to combine with the mushrooms and onions.
Simmer: Return the pork chops to the skillet, spoon some sauce over the top, cover, and simmer on low for 10-12 minutes, or until the pork chops reach an internal temperature of 145°F.
Garnish and Serve: Top with chopped flat-leaf parsley if desired. Serve warm and enjoy!