First, prepare your quick pickled onions. Place apple cider vinegar, white vinegar, salt, and sugar into a mason jar. Screw the cover on and shake the jar until the salt and sugar have dissolved. Then, place the sliced onion into the jar. Be sure that all of the onion is covered in vinegar.
Place the lid back on the jar and give it one more shake.
Finally, place the jar in the refrigerator for at least 2 hours or overnight for the optimal quick pickled onion!
Next, preheat the grill to 375ºF.
Prepare the burgers and place all of the ingredients for the burgers (minus the buns :P ) into a large bowl and mix together with a wooden spoon. Don't be afraid to get messy and use your hands.
Once all the ingredients are combined, form the burger patties by splitting the turkey burger mixture into 6 balls.
Then, wet your hands with water (the water helps to keep the turkey patty from sticking to your hands) and form each ball of meat into small patties and place them onto a plate.
Finally, spray a large piece of tin foil with non-stick cooking spray and place the tin foil on the grill.*
Transfer the burger patties onto the tin foil. The temperature of the grill should be roughly 375ºF. Cook each side for about 6-7 minutes covered. This will depend on the thickness of your burger.
While the burgers are cooking on the grill, prepare the avocado mash by placing the avocado in a small bowl and mash it with a fork. Add the green chiles, salt, and cilantro to the avocado and mix well.
Once the burgers have reached an internal temperature of 160ºF, remove the burgers from the grill and let them sit for 5 minutes.
Serve the burgers on a bun or piece of lettuce and top with avocado mash and pickled onions.