Mince up your onion with that fancy grater attachment on the food processor. (Or just use a hand grater...)
Change the attachment to the mixer thingie. Add the grilled peppers and then all the rest of the ingredients. Except the olives and the ground beef.
When it's all mixed up well, drop the olives in for the last couple of seconds to chop 'em up.
Mix in the meat - I used the food processor to mix it in because I was trying to save on washing up. (Lazy!)
Wrap around skewers. This batch filled up 4 of my cast iron skewers with HUGE kebabs. 3 smaller kebabs on wooden sticks. 1 li'l burger that I ate at lunch time cooked in my skillet. Yum. I WAS TESTING IT. HONEST.
I stuck these in the fridge for a few hours before grilling them on the bbq. They sorta 'firmed up' while in the fridge, which was handy, because I was a tad worried how mushy they were before and thought they might fall apart on the grill. But all was good. And tasty!