Preheat your oven to 375°F. Remove the Hatfield pork from its packaging and place it in a baking dish and bake according to package directions.
While the pork bakes, heat the olive oil in a small saucepan over medium heat. Add the onion and sauté for 2 - 3 minutes, until translucent. Add the minced garlic and sauté for about 1 minute until fragrant.
Pour in the chicken broth and Dijon mustard. Whisk continuously until combined, about 3-5 minutes. Add the heavy cream and stir until the sauce begins to thicken slightly. Season with salt and pepper to taste.
Once the pork is cooked, remove it from the oven and let it rest for 5-10 minutes before slicing. Drizzle generously with the creamy Dijon sauce. Garnish with fresh parsley if desired.