Preheat oven to 350°F.
In a large bowl, mix together ground beef, breadcrumbs, onion soup mix, eggs, chopped onion, minced garlic, green pepper, and ketchup until well combined.
Form the mixture tightly into a loaf shape.
Place the formed meatloaf in a 9x13-inch baking pan.
Drizzle tomato sauce evenly over the top of the meatloaf.
Bake for 1 hour or until internal temperature reaches 160°F.
Let rest for 5 minutes before slicing and serving.