Preheat oven to 425F convection. Line a baking sheet with parchment paper.
To a large bowl, add all of the meatloaf ingredients except the meat. Whisk to combine, then let it sit/soak for about 5-10 minutes.
Meanwhile, to make the glaze, add all of the ingredients to a small pot over medium-low heat and whisk to combine. Bring it to a gentle simmer for 2 minutes, stirring often (be careful of splatter).
To the baking sheet, add veggies, oil, and salt and toss to coat. Spread the veggies out, then make 8 spaces to nestle in the meatloaves.
To the bowl, add the beef and use your hands to break the beef up into chunks and mix until everything is combined and evenly distributed. Form into 8 mini meatloves and place them onto the spaces on the baking sheet.
Reserve about 2-3 tbsp of the glaze, then spoon the rest on top of each mini meatloaf.
Bake for 30-35 minutes or until the veggies are slightly charred and the meatloaves are browned on the edges and on top.
Serve the meatloaves and veggies topped with parsley (if using) and with the reserved glaze on the side for dipping as needed.