Manwich is pretty nasty shit and you can make your own super basic sloppy joe with just a little ketchup, brown sugar, and lemon juice. Add it right in the pan after you’ve browned the meat. This way you can control the sweetness and the sauciness. If you wanna get fancy you can also add a little soy sauce, garlic and onion powder, and maybe some liquid smoke or smoked paprika for some extra depth.