01 - Preheat oven to 375°F. Line a baking sheet with parchment paper or lightly grease a loaf pan.
02 - In a large bowl, gently mix ground turkey, eggs, onion, garlic, celery, carrot, breadcrumbs, milk, Worcestershire sauce, salt, black pepper, and thyme until just combined without overmixing.
03 - Form the mixture into a loaf shape on the prepared baking sheet or press into the loaf pan.
04 - Whisk together ketchup, brown sugar, apple cider vinegar, and Dijon mustard in a small bowl.
05 - Spread half of the glaze evenly over the top of the meatloaf.
06 - Bake for 40 minutes at 375°F.
07 - Remove meatloaf from oven and spread the remaining glaze over the top.
08 - Return to oven and bake for an additional 15 minutes, or until the internal temperature reaches 165°F and the top is caramelized.
09 - Allow the loaf to rest for 10 minutes before slicing.