In a small bowl, combine garlic powder, salt, black pepper, rosemary, and sage. Rub this flavorful mix evenly all over the pork tenderloin to infuse it with goodness.

Heat olive oil in a skillet over medium-high heat. Once hot, add the pork and sear it on all sides for about 3-4 minutes per side, until it develops a beautiful golden crust.

Carefully place the seared pork into the slow cooker. Pour the chicken broth around it, ensuring the tenderloin is nestled in the flavorful liquid.

In a separate bowl, whisk together Dijon mustard, butter, and white wine until smooth. Pour this tangy mixture over the pork in the slow cooker for a delightful flavor boost.

Cover the slow cooker with the lid and set it to low. Let it cook for 6-8 hours until the pork is incredibly tender and easy to shred.

Once cooked, remove the pork from the slow cooker. In a saucepan over medium heat, whisk cooking liquid with heavy cream and flour until it thickens. Stir in the chopped thyme and parsley just before serving.

Slice the tender pork, drizzle with the creamy sauce, and enjoy your delicious creation alongside your favorite sides!