1. Preheat your oven to 375°F (190°C). Season the pork tenderloin with salt and pepper.
2. In a large oven-safe skillet, heat the olive oil over medium-high heat. Sear the tenderloin on all sides until golden brown, about 8-10 minutes.
3. Remove the pork from the skillet and set it aside. Lower the heat to medium, add the butter, and sauté the minced garlic until fragrant, about 1 minute.
4. Deglaze the pan with the optional white wine, scraping up the brown bits for added flavor. Let it simmer for 2 minutes to reduce slightly.
5. Stir in the chicken broth, heavy cream, Dijon mustard, and thyme. Bring to a gentle simmer, stirring occasionally.
6. Return the pork tenderloin to the skillet. Spoon some of the sauce over the top.
7. Transfer the skillet to the preheated oven and roast for 20-25 minutes, or until the pork reaches an internal temperature of 145°F (63°C).
8. Remove the skillet from the oven and place the pork on a cutting board. Let it rest for 5 minutes before slicing.
9. Whisk the Parmesan cheese into the sauce until smooth. Adjust seasoning with salt and pepper to taste.
10. Slice the pork and serve with the creamy sauce drizzled over the top.

Cooking is like storytelling; each step builds on the last to create something memorable. Don’t rush it — let the flavors develop for a richer experience.