This pork tenderloin recipe is a delicious combination of sweet and savory flavors. The pork is seasoned with salt, pepper, and thyme, then seared in a hot pan until browned on all sides. It is then cooked in the oven until it reaches an internal temperature of 145°F. Meanwhile, the apple and onion topping is made in the Thermomix by sautéing sliced onions and apples in butter until they are soft and caramelized. The mixture is then seasoned with salt, pepper, and a pinch of cinnamon. The sliced pork tenderloin is served with the apple and onion topping on top.