Preheat the oven to 350 degrees and lightly grease a loaf pan.
In a large bowl, combine the grated carrot, diced onion, and chopped bell pepper with the ground beef.
Add the breadcrumbs, egg, milk, 2 tablespoons ketchup, Worcestershire sauce, garlic powder, salt, and black pepper. Mix gently with your hands until everything is evenly distributed.
Press the mixture into the prepared loaf pan and spread the remaining 1/4 cup ketchup evenly over the top.
Bake for 55 to 60 minutes until the internal temperature reaches 160 degrees.
Let the meatloaf rest in the pan for 10 minutes before slicing and serving.