1. Preheat your oven to 400°F (200°C). This will ensure your pork cooks evenly and stays juicy.
2. Pat the pork tenderloin dry with a paper towel. This will help achieve a nice sear. Season it generously with salt and black pepper.
3. In an oven-safe skillet, heat the olive oil over medium-high heat. Once hot, sear the pork tenderloin for about 3-4 minutes on each side, until it’s golden brown.
4. Transfer the skillet to the preheated oven and roast for 15-20 minutes, or until the internal temperature reaches 145°F (63°C). Use a meat thermometer for accuracy!
5. While the pork is roasting, prepare the sauce. In a small saucepan, combine the heavy cream, Dijon mustard, and chopped rosemary. Cook over medium heat, stirring frequently, until the sauce thickens slightly, about 5 minutes.
6. Once the pork is done, remove it from the oven and let it rest for 5 minutes. This resting period is crucial—it allows the juices to redistribute, making every bite tender and juicy.
7. Slice the pork tenderloin into medallions and drizzle the Dijon cream sauce over the top. Garnish with fresh parsley for a pop of color.

Cooking this dish always takes me back to those family dinners where everyone gathered around the table, sharing their day. It’s those simple moments that make the effort worthwhile.