Reduce the pan heat to medium-low and melt butter.
Sauté the onions and mushrooms in the butter, scraping up the browned bits as you go. Continue to saute, stirring frequently, for about 9-10 minutes, or until the onions have softened and the mushrooms released all of thier liquid.
Add garlic and cook for one more 1 minute.
Pour in the heavy cream, broth, salt, and pepper. Mix to combine.
Add the pork chops back to the pan, and bring the mixture to a simmer. Continue cooking until the sauce has thickened slightly and the pork chops are cooked through to an internal temperature of 145°F (about 5-6 minutes).
Spoon the mushroom sauce over the pork chops and garnish with chopped parsley. Serve immediately.