To make the vegetable filling: Heat oil in a large skillet. Add in onion and bell pepper. Cook over medium heat, stirring often, until translucent, 4-5 minutes. Add in the shredded carrot and cook for a few more minutes until softened. Stir in the garlic and cook for 1 minute, until aromatic. Add in salt and pepper, transfer to a plate* and let it cool completely.
To Make The Turkey Meatloaf: Preheat the oven to 350 F degrees (176 C degrees). Cover a baking sheet with parchment paper and set it aside.
Place the ground turkey, breadcrumbs, egg, chicken stock, parsley, salt and pepper in a large bowl. Add in the now-cooled vegetables. Mix them together with a large spoon or your hands.
Transfer the mixture into a mound onto the baking sheet and shape into a 9X3 inch freeform loaf.
Place in the oven and bake until it registers 165 F degrees when a thermometer is inserted in the middle, 30-35 minutes.
Turn the broiler to low.
To Make The Glaze: Make the glaze when the turkey meatloaf is baking. Mix together ketchup, Worcestershire sauce and maple syrup in a small bowl.
Spread the glaze over the top of the meatloaf in a thick even layer. Place the meatloaf in the broiler and broil until the glaze begins to bubble, 5 minutes or so.
Remove from the oven. Let it sit for 5 minutes on the kitchen counter. Garnish with fresh parsley, slice, and serve.