Heat the oven to 375°F. Lightly grease 8 cups of a standard muffin pan.
In a large bowl, combine the ground turkey, prepared cornbread stuffing, egg, onion, milk, Worcestershire sauce, sage, salt, and black pepper. Mix gently until evenly combined, taking care not to compact the mixture.
Divide the mixture among the 8 prepared muffin cups. Press it in lightly so the tops are level, but do not pack it tightly.
In a small bowl, stir together the cranberry sauce, ketchup, and Dijon mustard. Spoon the glaze over the tops of the turkey muffins.
Bake for 22 to 27 minutes, until the muffins are cooked through and reach 165°F in the center. Let them rest in the pan for 5 minutes before lifting them out to serve.