1. 1. Preheat the oven to 375°F (190°C).

2. 2. Prepare the stuffing according to package instructions and set aside.

3. 3. Cut a slit lengthwise down the center of the pork tenderloin, creating a pocket for the stuffing.

4. 4. Stuff the pork tenderloin with the prepared stuffing, then season with salt and pepper.

5. 5. Place the stuffed pork tenderloin on a baking sheet.

6. 6. Wash and chop the baking potatoes into wedges, then place them on the baking sheet around the pork tenderloin.

7. 7. Drizzle olive oil over the potatoes and season with salt, pepper, and any desired herbs or spices.

8. 8. Bake in the preheated oven for 25-30 minutes, or until the pork is cooked through and the potatoes are crispy on the outside.

9. 9. In a separate pan, boil the green beans until tender but still crisp, then drain them.

10. 10. Heat whole milk in a saucepan over low heat.

11. 11. Serve the stuffed pork tenderloin with roasted potatoes, green beans, and a drizzle of warm whole milk sauce.

12. 12. Enjoy your delicious meal!