When it comes to the main meatloaf ingredients, you'll find that most people add ketchup or BBQ sauce to a traditional meatloaf recipe. When you're making homemade meatloaf, the great thing about making your own meat mixture is that it gives you the freedom to add whatever you want.  Barbecue sauce adds a kick and pairs really well with the bacon slices, while ketchup adds a nice glaze to the top of the meatloaf mixture. Both pair well with this juicy meatloaf, so add and get ready to enjoy.