Place the egg, 1/2 onion, 2 cloves of garlic, coriander, celery salt, chili powder, cumin, and cilantro in a food processor and blend into a paste.
Pour that paste into a bowl with the ground Turkey and mix well by hand.
Form into 3-4 oz burger patties
Heat a large, non-stick skillet for medium-high heat (I like to use the griddle side of a cast iron grill pan)
Spray a liberal amount of “I Can’t Believe It’s Not Butter” spray and place the patty on the griddle. While the burger is cooking (about 5 minutes) season the top with Salt and Pepper and spray the top of the patty with another liberal dose of “I Can’t Believe It’s Not Butter” then flip the burger to cook the other side. Let this side cook for about 5 minutes too
You will end up with a nice charred crust on both sides of the burger with a very juicy center