Place 1 1/4 cups chopped pecans and 8 sprigs fresh thyme, leaves stripped in a food processor. Processor until the pecans are finely chopped, but not until it forms a paste.
Place this mixture into a baking dish that is long enough to fit the pork loins.
Add 1/2 cup panko breadcrumbs, 1/2 teaspoon salt and 1/4 teaspoon pepper to the baking dish and mix to combine.
Place 2-3 pounds pork tenderloins onto a sheet tray and pat them dry with a paper towel.
Brush the tenderloins all over with 4 Tablespoons dijon mustard.
Line a sheet tray with foil and spray with cooking spray.
Place the pork into the baking dish with the pecan mixture and press it in until it is coated.
Place on the foil-lined baking sheet. Repeat with the other pork tenderloin. There may be a little pecan mixture left, that’s okay.
Bake for 30-40 minutes until an internal temperature reaches 145°F. Allow to rest for 10 minutes before slicing.
While the pork is cooking, make the sauce. Whisk together 1/2 cup mayonnaise, 1/3 cup sour cream, 2 Tablespoons dijon mustard, 1 Tablespoon apple cider vinegar, 1/2 Tablespoon honey, 1/2 teaspoon fresh chopped thyme leaves, 1/4 teaspoon garlic powder, 1/4 teaspoon salt and 1/4 teaspoon pepper in a medium bowl. Serve on the side with the pork.
Notes
Please refer to my FAQ’s (Frequently Asked Questions) and ingredient list above for other substitutions or for the answers to the most common questions.
If you don't have a food processor, put the pecans and thyme into a ziploc bag then hit it with a heavy object (like a rolling pin) until fully crushed.