Step 1

Combine the thyme, paprika, garlic powder, onion powder, white pepper, and salt.

Step 2

Rub the pork loin with 2 tablespoons olive oil, then evenly sprinkle with the spice mix. Rub the spices in, making sure that the meat is evenly covered.

Step 3

Heat a large skillet over high heat, then sear the pork on each side for 1 to 2 minutes.

Step 4

Remove the browned pork loin from the pan and set it aside.

Step 5

Add the remaining oil to the pan along with the butter.

Step 6

When the butter is melted, add the onions and fry them for 3 minutes until they are softened.

Step 7

Add the garlic to the pan and fry for another minute.

Step 8

Add the onions, garlic, and juices to the slow cooker.

Step 9

Rest the pork loin on top of the aromatics.

Step 10

Combine the broth, vinegar, and brown sugar and pour the mixture over the meat.

Step 11

Cover the slow cooker and put it on the low heat setting.

Step 12

Cook the pork loin for at least 5 hours, then remove it from the slow cooker.

Step 13

Slice the pork before serving with the pan juices, and optionally thicken up the juices with corn starch.

Step 14

Garnish with parsley if desired.