Preheat oven to 425 degrees

Mix Ground beef, egg, breadcrumbs, cheese, salt and pepper in a large bowl. Mix until well combined

Carefully cut ends off of each onion and split each onion diagonally. Carefully remove the outer 2-3 layers of the onion taking care not to break them. Separate the layers for the outer shell of the bomb.

Take enough meat mixture and form a ball to fit inside the two halves of onion, just until seams slightly meet.

Wrap each onion with 1-3 pieces of bacon. I like to cross hatch two over the top and wrap another around the side. Can secure with a toothpick if needed.

Place on a rack in sheet pan or foil lined sheet pan. Bake at 425 for 45 minutes or until internal temperature is 165 degrees.

Remove from oven and baste with your favorite BBQ sauce and bake for 5 minutes more. Allow to rest for 10-15 minutes, serve and Enjoy!