Add the ground beef to a large shallow bowl and break up with a fork.
Place the croutons in a closable plastic bag, and crush the croutons with a rolling pin (*See Notes) and add to the bowl with the beef.
Sprinkle contents of the dry onion soup mix.
In a separate dish whisk the eggs together with the beef broth, 1/4 cup of the ketchup and pour over the meat mixture.
Gently combine the mixture with a fork or your hands until evenly mixed. Do not over mix as it will make a dense meatloaf.
Tip the mixture onto the prepared baking sheet and form into an oblong, loaf-size shape. Transfer to the center of the oven and bake for 35 minutes. Remove from the oven and spoon the remaining 1/2 cup of ketchup over the top of the meatloaf and return to the oven. Continue to bake for another 20-25 minutes or until an instant-read thermometer reads 160°F.
Transfer to a work space and allow to cool for 10-15 minutes before serving.
Notes
You should have 1-1/2 cups of crushed croutons.
The croutons can also be crushed by pulsing in a food processor.
Adding the ketchup for the last half of the cooking time will prevent the top from over cooking.
To keep your meatloaf from cracking on top place a pan of water on the rack underneath your meatloaf.