Heat a cast iron skillet on medium heat and heat the oil.
Add the vegetables to the skillet.
Combine the spices and to the vegetables. Saute for about 3 - 4 minutes until the veggies just become soft.
Allow the veggies to cool a little. Add to the ground turkey and mix well.
Form into 4 good size patties.
In the same skillet spice with the vegetables, add the grape seed oil and cook until well heated.
Add the burgers and cook for 5 - 6 minutes per side.
In the final minute of cooking, add the cheese to the burgers.
Let the burgers rest for 1 – 2 minutes.
Assemble the sandwich
Begin with the lettuce and add the burger.
Top with tomato and 2 or 3 slices of the avocados.
Finish with the barbecue sauce.
Serve and enjoy!