Heat 1 tbsp of the oil in a skillet on medium heat. Add all the vegetables and soften for a couple of minutes. Add all the spices and harissa, mix well and cook for 2 - 3 more minutes. Take off flame and let cool.
Add the spiced, softened vegetables to the ground turkey. Mix well and form into 6 equal patties. Heat the remaining oil in a cast iron skillet on medium high heat. Add the burgers and cook on each side for 5 - 6 minutes.
Mix together the mayonnaise and harissa to make the aioli.
Serve the Harissa Burger and top with the harissa aioli, fresh cucumbers and caramlized red onions.