Preheat oven to 350°F and coat a baking sheet with non-stick oil spray
Add the ground beef and ground pork to a large bowl and break it up with a fork.
Place the croutons or crackers in a zip-top bag and crush them with a rolling pin. You should have about 1½ cups. Add them to the bowl with the meat.
Sprinkle in the contents of the dry onion soup mix.
In a separate dish, whisk the eggs together with the beef broth and ¼ cup of the ketchup. Pour this mixture over the meat.
Gently combine the mixture with a fork or your hands until evenly mixed. Do not over mix as it will make a dense meatloaf.
Transfer the mixture to the prepared baking sheet and shape it into a loaf. Transfer to the center of the oven and bake for 35 minutes.
Remove from the oven and spoon the remaining ½ 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.
Allow to cool for 10-15 minutes before serving.
Notes
Mix just until combined: Overmixing will make the meatloaf dense instead of tender.Shape on a baking sheet: Forming the loaf on a sheet pan allows heat to circulate and gives better browning than a loaf pan.Add the ketchup later: Spreading it on partway through baking helps it thicken and stay slightly sticky instead of drying out.Cook to temperature: Bake until the center reaches 160°F. An instant-read thermometer keeps you from overcooking it.Let it rest before slicing: Resting for 10 to 15 minutes helps the juices settle so the slices hold together better.