Hollow out the onions until you reach the last layer. Mix the ground beef with the salt and 1 cup of bread crumbs. Fill the center of the onions with the beef mixture, creating a well. Stuff cheese into the center of the beef.
Wrap the bacon around the top sides of the onion. Top with the remaining bread crumbs. Wrap the onions in aluminum foil. Bake at 350 degrees for 30 minutes.
Pull the aluminum foil away from the onion and bake for another 30 minutes.
If bacon isn’t as crispy as you would like, broil the onions for 5 minutes to crisp it up