Mix the Authentic Greek Herb Blend into ground meat and form 1/3 lb. patties.
Season both sides of each patty with more seasoning.
Preheat your grill for medium-high heat.
Sear burgers for 30 seconds a side directly over the fire, turn grill temperature to low, and then move to indirect heat until the burgers reach your desired doneness.
Spread tzatziki sauce on both sides of the bun, top the burgers with feta cheese, tomatoes, red onion, cucumbers, and enjoy!