Heat the oven to 375 degrees and line a baking sheet with parchment paper.
Place the ground beef in a large bowl and add the shredded zucchini, shredded carrot, chopped basil, breadcrumbs, egg, salt, and black pepper.
Mix everything with your hands until the ingredients are evenly combined but not overworked.
Divide the mixture into 8 equal portions and shape each into a small loaf about 3 inches long.
Arrange the mini meatloafs on the prepared baking sheet with space between them.
Stir the ketchup and brown sugar together in a small bowl until smooth.
Spoon the ketchup mixture over the top of each mini meatloaf, spreading it lightly to cover the surface.
Bake for 25 to 30 minutes until the internal temperature reaches 160 degrees and the glaze looks set.