Preheat oven to 425°F. Cover a rimmed baking sheet with foil and place a baking rack over the sheet (baking rack keeps bottoms from burning and allows drippings to fall below.) Grease baking rack generously with cooking spray.
In a saucepan over medium to medium-high heat, sauté vegetables in olive oil until soft, about 5 minutes. Lightly season vegetables with salt and pepper to taste while they sauté. Set aside to cool.
In a mixing bowl, using your hands or a wooden spoon, combine cooled vegetable mixture, ground turkey, egg, panko, 1/4 cup ketchup, broth, garlic powder, parsley, basil, 1/2 teaspoon salt, and 1/2 teaspoon pepper. Do not over mix.
Gently scoop out a heaping, loosely packed 1/2 cup of meat mixture for each meatloaf. Gently form into a patty that's evenly about 1 1/2 inches thick. Do not press down hard on mixture to avoid compacting it. Top each mini meatloaf with about 2 teaspoons ketchup, spreading around on top evenly.
Bake for 25-30 minutes or until the middle is no longer pink.
To Freeze: Bake and let cool completely. Seal in freezer bag or container, squeezing out all the air. Freeze up to 2 months.
To Prepare: Thaw in refrigerator overnight and reheat in microwave, using a lower power setting, just until warmed through. Or if reheating from frozen, use the defrost setting on the microwave.