Step 2

In a medium bowl, mash the avocado and lime juice together until coarsely smooth. Stir in the red onion, jalapeño, garlic and tomato; season with salt and pepper.

Step 3

In a medium bowl, mix together the ground beef, egg white, Worcestershire sauce, garlic powder, salt and pepper. Form the mixture into 12 even balls.

Step 4

Wrap each meatball in a piece of bacon and secure with a toothpick, if needed.

Step 5

Heat a large pan over medium heat. Add the meatballs and cook until the bacon begins to crisp and the meatballs are fully cooked through, 12 to 15 minutes. Turn the meatballs often while they cook.

Step 6

Top each meatball with a piece of lettuce, a heaping tablespoon of guacamole, a slice of tomato and a piece of mozzarella. Skewer each burger bite with a toothpick to help keep the toppings in place.