01 -
Preheat the oven to 350°F and line a baking sheet with aluminum foil.
02 -
Add the lean ground beef, finely chopped onion, bread crumbs, milk, eggs, garlic powder, onion powder, salt, pepper and tomato paste to a large bowl. Mix it together really well.
03 -
Create a loaf shape by forming with your hands or by packing the beef mixture into a greased loaf pan and then flipping it over onto the baking sheet. Remove the loaf pan and it will create the perfect loaf shape.
04 -
Bake the meatloaf uncovered and without the sauce topping for 40 minutes.
05 -
While the meatloaf is cooking, mix together the ketchup and white vinegar. Remove the meatloaf from the oven and spread the ketchup mixture along the top and sides.
06 -
Bake uncovered for another 10 minutes or until fully cooked inside.
07 -
Once cooked, let the meatloaf sit for 10 minutes to allow the juices inside the meatloaf to distribute evenly. Slice into pieces and serve.