Clean the grill grates thoroughly and lightly oil them to prevent the burgers from sticking to the grill. Preheat your grill to medium-high heat. (around 375-400°F). If you’re using a charcoal grill, ensure the coals are evenly lit and glowing.
Add the ground beef, garlic, and minced onions to a large bowl.
In a smaller bowl, mix together breadcrumbs, egg, and Worcestershire sauce.
Add the mixed ingredients to the bowl of ground beef, along with the salt, pepper, and burger seasoning, and lightly mix until fully combined.
Divide the mixture into 4- 6 equal parts and form into patties. Use your thumb to a slight depression in the center of each patty to prevent the burgers from puffing up on the grill.
Place patties on the preheated grill over direct heat. Let the patty cook for at least 3 to 4 minutes before giving it a first flip, giving the meat time to sear. Otherwise, the patty may start to fall apart.
Remove the patties from the grill when they reach an internal temperature of 160°F (71°C).
Assemble your avocado burger by spreading a generous amount of the mashed avocado mixture on each bun, either at the bottom or the top, before or after adding the patty. I have tried it all, and it all works just fine.
Finally, add additional toppings, such as lettuce, tomato slices, cheese, or condiments of your choice.