Preheat oven to 350°F. Take a baking tray, spray a foil lined tray with some cooking spray and set aside.
Take a small pan, melt unsalted butter on medium-low heat. Now let the onion and garlic paste cook until getting tender. Set aside and let it cool completely.
Take a medium-size bowl, combine all eggs, milk, and breadcrumbs and let the mixture sit for 5-10 minutes.
Add the ground beef, onion, ketchup/chili sauce, Italian seasoning, black pepper, salt, ground paprika, and parsley to taste. Just give a good mix until all ingredients get combined well.
Gently meat to the sprayed loaf pan, press the meat down and shape evenly and bake meatloaf at 350°F for almost 30 minutes.
Take another small bowl, mix all ingredients (mentioned in the meatloaf sauce section) for the sauce. Now spread the sauce over the meatloaf then return to the oven and bake additional for15-20 more minutes.
Now when meatloaf gets baked completely, allow it to rest for 10 minutes before slicing.
Drizzle and enjoy the slice with baking juice from the pan.