[header] How to make healthy sloppy joes [title] Cook the ground beef and onions. [step] Place 1 pound of (454 g) of extra-lean ground beef into a large skillet over medium-high heat. Dice 1 onion and add it to the pan. 
Stir and cook the beef and onion for 5 minutes, so the meat is completely browned and crumbly. Carefully drain off any fat and discard it.